regent is a person selected to act as head of state (ruling or not) because the ruler is a minor, not present, or debilitated. Currently there is only one ruling  Regency in the world, sovereign Liechtenstein. The following is a list of regents.
Current regents in various monarchies
Those who held a regency briefly, for example during surgery, are not necessarily listed, particularly if they performed no official acts; this list is also not complete, presumably not even for all monarchies included. The list includes some figures who acted as regent, even if they did not themselves hold the title of regent.
Prince Naif bin Al-Abdullah from 20 July to 5 September 1951, due to the schizophrenia of his brother King Talal, who was in a Swiss mental hospital. A regency council (
Ibrahim Hashem, Suleiman Toukan, Abdul Rahman Rusheidat and chairing Queen Mother Zein al-Sharaf Talal) took over during the king's ailment & continued after the king's forced abdication (on 11 August 1952), serving from 4 June 1952 to 2 May 1953, until King Hussein came of age. Crown Prince Hassan, from 4 July 1998 to 19 January 1999 while his brother King Hussein was undergoing cancer treatments.
Malaysia and its constitutive monarchies
Terengganu Tengku Muhammad Ismail (eight-years of age at the time), co-reigned with the three-member Regency Advisory Council ( Majlis Penasihat Pemangku Raja) from 2006 to 2011. His father, Sultan Mizan Zainal Abidin the Sultan of Terengganu was elected as 13th King of Malaysia. The Malaysian constitution does not allow a simultaneous reign as both the King of Malaysia and as Monarch of the King's native state (deemed absent on the State throne). Sultan Mizan was crowned as King on 13 December 2006 and the prince as the Regent ( Pemangku Raja) of Terengganu effective on the same date.
Saudi Arabia 30 March 1964 - 2 November 1964
Crown Prince Faisal (b. 1906 - d. 1975) -Regent for his brother King Saud, and later his successor 1 January 1996 - 21 February 1996 formally, but de facto until 1 August 2005 Crown Prince Abdullah (b. 1924 - d. 2015) -Regent for his brother King Fahd, and later his successor
Johann Friedrich Struensee, de facto regent for King Christian VII, 1770-1772
Hereditary Prince Frederick (along with, effectively, his mother, Queen Juliana Maria) for his half-brother (and her step-son), King Christian VII, 1772-1784
Crown Prince Frederick for his father, King Christian VII, 1784-1808 Crown Prince Frederick for his father, King Christian X, 1942-1943
Duke Adolph of Nassau was Regent from 8 April 1889 to 3 May 1889 and from 4 November 1890 to 23 November 1890, during the terminal illness of Grand Duke William III.
Grand Duchess Marie Anne was Regent to her husband, Grand Duke William IV, during his terminal illness from 19 November 1908 to 25 February 1912, and then Regent to her daughter, Grand Duchess Marie-Adélaïde, during her minority from 25 February 1912 to 18 June 1912.
Hereditary Grand Duke Jean was Regent for his mother, Grand Duchess Charlotte, from 4 May 1961 to 12 November 1964. Hereditary Grand Duke Henri was Regent for his father, Grand Duke Jean, from 4 March 1998 to 7 October 2000.
The Dowager Princess Anne, during the minority of her son, William V, Prince of Orange, between 1751 and 1759
The Dowager Princess Marie Louise, during the minority of her grandson, William V, between 1759 and 1765, jointly with
Duke Louis Ernest of Brunswick-Lüneburg, the Captain-General of the Dutch army, during the minority of William V, jointly with Dowager Princess Marie Louise until her death in 1765, between 1759 and 1766
Princess Carolina, during the minority of her brother, William V, and jointly with Duke Louis Ernest, between 1765 and 1766.
Council of State, during insanity of the King William III in 1889 and again in 1890
Queen Emma (1890-1898), during the minority of her daughter Queen Wilhelmina, between 1890 and 1898 Crown Princess Juliana during illness of her mother Queen Wilhelmina in 1947 and again in 1948
Crown of Castile: Ferdinand II of Aragon, twice regent of Castile (1504-1506, 1507-1516) for Queen Juana and her son Charles I.
Crown of Castile: Francisco Jiménez de Cisneros disability of Queen Joanna from 1516 to 1517.
Crown of Aragon: Alonso de Aragón and Germaine of Foix disability of Queen Joanna from 1516 to 1518.
Pope Adrian VI (1520-1522) and Isabella of Portugal (1529-1533, 1535-1536, 1538-1539) and Prince Philip (1539-1541, 1543-1548, 1551-1554) and Archduke Maximilian (1548-1551) and Maria of Austria (1548-1551) during Charles I's absences.
Joan of Austria, Princess Dowager of Portugal ( Infanta Juana), regent of Castile (1554-1559) for King Philip II of Spain during the king's marriage to Queen Mary I of England.
Fernando de Acevedo as President of the Council of Castile during King Philip III's visit to Portugal in 1619.
Mariana of Austria, regent of Spain during the minority of her son Charles II from 1665 to 1675.
Luis Manuel Fernández de Portocarrero cardinal and archbishop of Toledo during King Charles II's illness in 1700. Government Board of the Realms during the illness of Charles II and Philip V absence from 1700 to 1701.
Luis Manuel Fernández de Portocarrero cardinal and archbishop of Toledo during King Philip V's absence from 1701 to 1703. Queen Regent
Elisabeth Farnese during King Charles III's absence in 1759.
Infante Antonio Pascual of Spain, French invasion (King Ferdinand VII's absence) in 1808. Lieutenant General
Joachim Murat (1808) and Jean de Dieu Soult (1813) during King Joseph's absence. A
Supreme Central and Governmental Junta of Spain and the Indies from 25 September 1808 to 31 January 1810 and a Regency Council (the Cortes of Cádiz from 1 February 1810 to 10 May 1814 during the imprisonment/abdication of Ferdinand VII. Regencies during the
Hundred Thousand Sons of St. Louis Intervention (1823): Provisional Regency Council of the Realm. President: Cayetano Valdés y Flores, Provisional Government Board of Spain and the Indies. President: Francisco de Eguía, Regency Council of the Realm during King's Captivity. President: Pedro de Alcántara Álvarez de Toledo, 13th Duke of the Infantado.
Maria Christina of the Two Sicilies during the minority of her daughter Isabella II from 1833 to 1840.
Baldomero Espartero, Prince of Vergara during the minority of Isabella II from 1840 to 1843.
Francisco Serrano, duke of la Torre, during the interregnum between the reigns of Isabella II and Amadeo I, from 1868 to 1871.
Antonio Cánovas del Castillo during King Alfonso XII's absence from 1874 to 1875.
Maria Christina of Austria, regent during her pregnancy after her husband's death and then for her son Alfonso XIII from 26 November 1885 - 17 May 1902. The Caudillo general Francisco Franco, became de facto regent for life in 1947 to 1975, after reinstating the monarchy with a vacant royal throne ultimately filled by Juan Carlos.
Mats Kettilmundsson (1318-1319), between the deposition of king Birger Magnusson and the election of three-year-old Magnus Eriksson as king.
Ingeborg of Norway (1319-1326) president of the council of regents for her under age son, king Magnus Eriksson, in both Sweden and Norway.
Karl Knutsson (Bonde) (1438-1440), during the interregnum following the deposition of king Eric XIII; later became king as Charles VIII
Bengt Jönsson Oxenstierna (1448; together with his brother Nils Jönsson Oxenstierna), during the interregnum between the death of Christopher of Bavaria and the election of Karl Knutsson (Bonde) as king.
Nils Jönsson Oxenstierna (1448; together with his brother Bengt Jönsson Oxenstierna), during the interregnum between the death of Christopher of Bavaria and the election of Karl Knutsson (Bonde) as king.
Jöns Bengtsson Oxenstierna (1457; together with Erik Axelsson Tott), during the interregnum following the first deposition of King Charles VIII, and again (1465-1466), following his second deposition.
Kettil Karlsson Vasa (1464), during the interregnum following the first deposition of King Christian I; and again (1465), following the second deposition of Charles VIII
Erik Axelsson Tott (1457; together with Jöns Bengtsson Oxenstierna) (1466-1467), following the end of Jöns Oxenstierna's second regency.
Sten Sture the Elder (1470-1497, 1501-1503) the longest serving regent during the Kalmar Union
Svante Nilsson (1503-1512), succeeding Sten Sture the Elder.
Erik Trolle 1512.
Sten Sture the Younger (1512-1520), succeeding Svante Sture.
Gustav Eriksson Vasa was firstly Regent (1521-1523) after the final dissolution of Kalmar Union, but soon was proclaimed King. Duke
Charles of Södermanland (1599-1604) after ousting his Catholic nephew King Sigismund, until he himself claimed the throne.
Axel Oxenstierna (1632-1644), during the minority of Queen Christina. Dowager Queen
Hedwig Eleonora of Holstein-Gottorp (1660-1672), during the minority of her son King Charles XI, again (1697-1699), during the minority of her grandson King Charles XII, and finally, de facto, during Charles's absence from Sweden during the early years of the Great Northern War (1700-1713).
Princess Ulrika Eleonora, during the frequent absences of her brother, Charles XII, in the later years of the Great Northern War (1713-1718)
Charles, Duke of Södermanland (1792-1796) for his underage nephew Gustav IV Adolf of Sweden, and again (1809) after Gustav IV Adolf was deposed and before Charles himself was proclaimed King Charles XIII. Crown Prince
Charles John (1810-1818), for his adoptive father King Charles XIII, due to Charles XIII's incapacity. Crown Prince Charles (1857-1859), for his father King Oscar I, due to Oscar's incapacity.
United Kingdom and its predecessor realms
William Longchamp (intermittently 1189-1199), during the absences of Richard I on the Third Crusade, imprisoned in the Holy Roman Empire, and in France.
William Marshal, 1st Earl of Pembroke (1216-1219) and then Hubert de Burgh, 1st Earl of Kent (1219-1227), during the minority of King Henry III A regency council headed by
Henry, 3rd Earl of Lancaster (1327-1330) during the minority of Edward III
John, Duke of Bedford (1422-1435), Humphrey, Duke of Gloucester and Henry Beaufort (1422-1437), during the minority of their nephew, Henry VI
Richard Plantagenet, 3rd Duke of York (1454-1455; 1455-1456), during the incapacity of his cousin, Henry VI
Richard, Duke of Gloucester (1483), during the minority of his nephew, Edward V
Lady Margaret Beaufort (1509) during the minority of her grandson Henry VIII Queen
Catherine of Aragon, while Henry VIII was in France. In this time she played a large role in the defeat of the Scots at the Battle of Flodden, and was Queen Regent for several months. Queen
Catherine Parr, while Henry VIII was in France.
Edward Seymour, 1st Duke of Somerset (1547-1549), during the minority of his nephew, Edward VI
John Dudley, 1st Duke of Northumberland (1550-1553), during the minority of Edward VI During the month of March 1617,
Francis Bacon served as regent of England during the reign of King James I of England William III personally led his army into battle each year during the Nine Years' War (1689-1698). In his absence, the kingdom was administered by his wife and co-ruler Queen Mary II until her death in 1694, and thereafter by a council of seven Lord Justices (sometimes referred to as the "Lords Regent"): William Cavendish, 1st Duke of Devonshire (1640-1707), Charles Sackville, 6th Earl of Dorset (1638-1706), Sidney Godolphin, 1st Earl of Godolphin (1645-1712), Thomas Herbert, 8th Earl of Pembroke (1656-1733), Charles Talbot, 1st Duke of Shrewsbury (1660-1718), John Somers, Baron Somers (1651-1716), and Thomas Tenison, Archbishop of Canterbury. A regency council of six Guardians existed (1286-1290) during the minority of
Margaret, Maid of Norway. These were; William Fraser, Bishop of St Andrews; Donnchadh III, Earl of Fife (followed by Donnchadh IV, Earl of Fife); Alexander Comyn, Earl of Buchan; Robert Wishart, Bishop of Glasgow; James Stewart, 5th High Steward of Scotland; and John II Comyn, Lord of Badenoch
William Wallace (1298), claiming to act as regent on behalf of the deposed King John
Robert the Bruce, Earl of Carrick (1298-1300)
John III Comyn, Lord of Badenoch (1298-1301; 1302-1304)
William Lamberton, Bishop of St Andrews (1299-1301)
Sir Ingram de Umfraville (1300-1301)
John de Soules (1301-1304)
Thomas Randolph, 1st Earl of Moray (1329-1332) (during the minority of David II)
Donald, Earl of Mar (1332) (during the minority of David II)
Sir Andrew Murray (1332) (during the minority of David II)
Sir Archibald Douglas (1332-1333) (during the minority of David II)
Robert Stewart, 7th High Steward of Scotland (1334-1335) (during the minority of his half-uncle David II)
John Randolph, 3rd Earl of Moray (1334-1335) (during the minority of David II)
Sir Andrew Murray (1335-1338) (during the minority of David II)
Robert Stewart, 7th High Steward of Scotland (1338-1341; 1346-1357) (during the minority and later captivity of his half-uncle David II)
John Stewart, Earl of Carrick (during the incapacity of his father, Robert II)
Robert Stewart, 1st Earl of Fife (1388-1393) (during the incapacity of his father, Robert II and of his brother, Robert III)
David Stewart, 1st Duke of Rothesay (1399-1401) (during the incapacity of his father, Robert III)
Robert Stewart, 1st Duke of Albany (1401-1420) (during the incapacity of his brother Robert III, and then during the minority and captivity of his nephew James I)
Murdoch Stewart, 2nd Duke of Albany (1420-1424) (during the captivity of his cousin James I)
Archibald Douglas, 5th Earl of Douglas (1437-1439) (during the minority of James II)
William Crichton, 1st Lord Crichton and Sir Alexander Livingston (1439-1445) (during the minority of James II)
William Douglas, 8th Earl of Douglas (1445-1449) (during the minority of James II)
Mary of Gueldres (1460-1463) (during the minority of her son, James III)
James Kennedy and Gilbert Kennedy, 1st Lord Kennedy (1463-1466) (during the minority of James III)
Robert Boyd, 1st Lord Boyd (1466-1469) (during the minority of James III)
Patrick Hepburn (1488-1494) (during the minority of James IV)
Margaret Tudor (1513-1514) (during the minority of her son, James V)
Robert Maxwell, 5th Lord Maxwell (1513-?) (Regent Isle of Arran during the minority of James V. Also in 1536 he was created one of the members of the council of Regency during the absence of the king in France)
John Stewart, 2nd Duke of Albany (1514-1524) (during the minority of his cousin, James V)
Archibald Douglas, 6th Earl of Angus and Archbishop James Beaton (1524-1528) (during the minority of the former's stepson James V)
James Hamilton, 2nd Earl of Arran (1542-1554) (during the minority of his cousin, Mary, Queen of Scots)
Mary of Guise (1554-1560) (during the minority of her daughter Mary, Queen of Scots)
James Stuart, 1st Earl of Moray (1567-1570) (during the minority of his nephew James VI)
Matthew Stewart, 4th Earl of Lennox (1570-1571) (during the minority of his grandson James VI)
John Erskine, Earl of Mar (1571-1572) (during the minority of James VI) James Douglas, 4th Earl of Morton (1572-1581) (during the minority of James VI)
Former regents in various monarchies
The same notes apply; inclusion in this list reflects the political reality, regardless of claims to the throne.
Duke of Zhou, during the minority of his nephew Song Ji, the King Cheng of Zhou until he was old enough to rule.
Huo Guang, during the reign of Emperor Xuan of Han, the emperor reaffirmed that all important matters were to be presented to Huo before Huo would present them to the emperor. The source of title of highest imperial nobility of ancient Japan " Kanpaku" (Regent).
Yang Shiqi, Yang Rong, Yang Pu, Zhang Fu and Hu Ying during the minority of the Zhengtong Emperor from 1435 to 1442.
Gao Gong, Zhang Juzheng, Gao Yi and Feng Bao during the minority of the Wanli Emperor from 1572 to 1582.
Dorgon, Jierhalang and Duoduo as Prince-Regent, from 1643 to 1650 during the minority of his nephew Fulin, the Shunzhi Emperor.
Sonin, Suksaha, Ebilun and Oboi during the minority of the Kangxi Emperor from 1661 to their various deaths or downfalls. The last one, Oboi fell from grace in 1669.
Zaiyuan, Duanhua, Sushun, Jingshou, Muyin, Kuangyuan, Du Han and Jiao Youying during the minority of the Tongzhi Emperor in 1861.
Empress Dowager Ci'an (1861-1873, 1875-1881), Empress Dowager Cixi (1861-1873, 1875-1889, 1898-1908) and Yixin (1861-1865) during the minority of the Tongzhi Emperor and de facto ruler for almost the entire reign of the Guangxu Emperor. Zaifeng, between 1908 and 1911 for his son Puyi, Empress Dowager Longyu (1908-1912) abdicated monarchy on behalf of Puyi in 1912.
Before the 1881 unification, there were essentially four rulers' capitals:
Kabul, Herat, Qandahar and Peshawar (the last now in Pakistan); all their rulers belonged to the Abdali tribal group, whose name was changed to Dorrani with Ahmad Shah Abdali. They belong either to the Saddozay segment of the Popalzay clan (typically styled padshah, king) or to the Mohammadzay segment of the Barakzay clan (typically with the style Amir, in full Amir al-Mo´menin "Leader of the Faithful"). The Mohammadzay also furnished the Saddozay kings frequently with top counselors, who served occasionally as (Minister-)regents, identified with the epithet Mohammadzay.
Both before and during the
British raj (colonial rule), most of India was ruled by several hundred native princely houses, many of which have known regencies, under the raj subject to British approval
In the short-lived Hashemite kingdom, there were three regencies in the reign of the third and last king
Faysal II (b. 1935 - d. 1958; also Head of the 'Arab Union', a federation with the Hashemite sister-kingdom Jordan, from 14 February 1958) :
The regent Yariri (r.) and his successor Kamani (l.), on a relief from Carchemish. An example of regency from ancient history.
John, Prince Regent, was responsible for elevating Brazil to the status of Kingdom in 1815. One year later, he was acclaimed King of Portugal, Brazil and Algarves.
Pedro I, Prince Regent, was responsible for declaring the independence of Brazil, in 1822, during his regency (1820-1822), after his father, John VI, returned to Portugal. Some months later, he would be acclaimed Emperor of Brazil.
Maria Leopoldina, Empress consort of Brazil, acted as Empress Regent while her husband, Pedro I, was away - especially during the war against Uruguay. Provisional triumviral regency - from 7 April to 18 June 1831, comprised
José Joaquim Carneiro de Campos, marquess de Caravelas, Nicolau Pereira de Campos Vergueiro and Francisco de Lima e Silva, baron of Barra Grande, was formed to control the country after the abdication of Peter I. Permanent triumviral regency - from 18 June 1831 to 12 October 1835, comprised the baron of Barra Grande as well as
José da Costa Carvalho, Marquis of Monte Alegre, and João Bráulio Muniz.
Diogo Antônio Feijó - from 12 October 1835 to 19 September 1837, during what was considered the advance of the Liberal Party
Pedro de Araújo Lima, Marquis of Olinda - from 1837 (provisional to 1838) to 1840, during what was considered the retaken of the Conservative Party. Isabel, Princess Imperial of Brazil, was Princess Regent of the Empire of Brazil three times (1871-1872; 1876-1877; 1887-1888) while her father travelled abroad. During her last regency, she signed the abolition of slavery in Brazil (known as the " Lei Áurea", or "Golden Law"), on 13 May 1888, whereby Isabel got the sobriquet Isabel the Redeemer. For the act of signing the Golden Law, she was awarded the Golden Rose by Pope Leo XIII.
For most of the reign of the epileptic and severely disabled Emperor
Ferdinand I (1835-1848), Ferdinand's uncle, Archduke Ludwig (from 1836 to 1848), acted as a de facto regent.
After the abdication of
Nicholas II of Russia, the throne of the Grand Duke of Finland was vacant and according to the constitution of 1772, a regent was installed by the Finnish Parliament during the first two years of Finnish independence, before the country was declared a republic.
Anne of Kiev and Baldwin V, Count of Flanders (1060-1067), during the minority of her son and his nephew Philip I
Suger, Abbot of St. Denis (1147-1149), during the absence of Louis VII on the Second Crusade
Adèle of Champagne and Guillaume de Champagne, Archbishop of Reims (1190-1191), during the absence of her son Philip II on the Third Crusade.
Blanche of Castile (1226-1234), during the minority of her son Louis IX
Blanche of Castile (1248-1252) and Alphonse, Count of Poitou and Toulouse (1248-1254), during the absence of her son and his brother Louis IX on the Seventh Crusade.
Mathieu de Vendôme, Abbot of Saint-Denis and Simon de Clermont, Sieur de Nesle, during the absence of Louis IX on the Eighth Crusade (1270).
Philip the Tall (1316), during the interregnum between the death of his brother Louis X and the birth of Louis' posthumous son John I, and during the minority of the short-lived John I.
Philip, Count of Valois and Anjou (1328), from the death of his cousin Charles IV until the birth of a posthumous daughter to the late king brought about Valois' own accession to the throne.
Charles, the Dauphin (1356-1360), during the captivity of his father in England
Louis I, Duke of Anjou (1380-1382), during the minority of his nephew Charles VI
Jean, Duke of Berry, Philippe II, Duke of Burgundy, and Louis II, Duke of Bourbon (1382-1388), during the minority of their nephew, Charles VI
Louis II, Duke of Bourbon and John, Duke of Berry (1388-1407), during the insanity of their nephew, Charles VI
Isabella of Bavaria (1417-1420) and then Henry V of England, during the insanity of her husband and his father-in-law, Charles VI; they were opposed by
Charles, the Dauphin (1417-1422), Charles VI's eldest surviving son, who also claimed the regency.
John, Duke of Bedford (1422-1435), acting as regent on behalf of his nephew, the young Henry VI of England in opposition to the king Charles VII
Anne of France and her husband Pierre de Beaujeu (1483-1492), during the minority of her brother, Charles VIII
Louise of Savoy (1515-1516), during the absence of her son, Francis I, in Italy.
Louise of Savoy (1523-1526), during the absence at war in Italy, and then the captivity, of her son, Francis I
Catherine de' Medici:
(1552) While her husband
Henry II left the kingdom for the campaign of Metz. (1560-1563) During the minority of her second son,
Charles IX (1574) During the absence of her third son, Henry III, in Poland
Marie de' Medici (1610-1614), during the minority of her son, Louis XIII
Anne of Austria (1643-1651), during the minority of Louis XIV
Philippe II, Duke of Orléans (1715-1723), during the minority of Louis XV; often called "the Regent", since he was the last regent of France. **The related era and style are commonly referred to as the (analogous to the Régence British Regency period).
A 136 carat (27.2 g) diamond he acquired in 1717 is known as 'le régent'
Louis-Stanislas-Xavier, comte de Provence, while living in exile, self-declared Regent for his nephew Louis XVII of France after the 1793 guillotining of King Louis XVI, until the young pretender's death in 1795.
Charles-Philippe de France, comte d'Artois, appointed Lieutenant General of the Kingdom by a temporary government from 14 April 1814 until Louis XVIII arrived from England. Empress Eugenie, three times for her husband, Napoleon III of France, during his absence.
Saxe-Coburg and Gotha
Countess Teresa, during the minority of her son Afonso I (1112-1139). Styled herself Queen of Portugal.
Afonso, Count , after jure uxoris of Boulogne-sur-Mer Pope Innocent IV had deposed his brother Sancho II, and before assuming himself the throne as Afonso III, following Sancho's death (1245-1248). Styled himself Regent and Defender of the Kingdom.
Queen Leonor, for her daughter Beatrice I (1383).
João, Mestre de Avis, during the Dynastic Crisis, and before assuming himself the throne as John I (1384-1385). Styled himself Regent and Defender of the Kingdom.
Queen Eleanor, during the minority of her son Afonso V (1438-1439).
Peter, Duke of Coimbra, during the minority of his nephew Afonso V (1439-1448).
Queen Catharine, during the minority of her grandson Sebastian I (1557-1562).
Cardinal Prince Henry, during the minority of his grandnephew Sebastian I (1562-1568).
Queen Luísa, for her son Afonso VI (1656-1662).
Prince Peter, for his brother Afonso VI, and before assuming himself the throne as Peter II, following Afonso's death (1668-1683).
Catherine, Queen Dowager of England, Scotland and Ireland, for her brother, Peter II, in 1701 and 1704-05.
John, Prince Regent, during the incapacity of his mother Mary I, and before assuming himself the throne as John VI, following her death (1792-1816).
Princess Isabel Maria, following her father's ( John VI) death, and whilst awaiting the arrival of her brother Peter IV to assume the throne (1826-1828).
Prince Michael, for his niece Mary II, and before usurping the throne for himself as Michael I (1828).
Peter, Duke of Bragança (former King Peter IV), for his daughter Mary II (1831-1834). King , during the minority of his son jure uxoris Ferdinand II Peter V (1853-1855).
Serbian regents abroad
Kaʻahumanu, between 1824-1832 during the rule of the infant Kamehameha III; she was also Kuhina Nui (co-ruler), regent, of Kamehameha II Elizabeth K?naʻu, between 5 June 1832 - 17 March 1833 after Kaʻahumanu's death and before Kamehameha III became 20 years old 
defines the term as "A person appointed to administer a State because the Monarch is a minor, is absent or is incapacitated." Oxford English Dictionary
^ a b
Pryde, E. B., ed. (1996). . Cambridge University Press. pp. 45-46. Handbook of British Chronology ISBN . 978-0-521-56350-5
^ Trevor Bryce:
The World of the Neo-Hittite Kingdoms: A Political and Military History. Oxford, New York 2012, p. 95.
"Kuhina Nui 1819-1864". Centennial Exhibit. State of Hawaii Department of Accounting and General Services . Retrieved 2009.