The eldest brother, known as Majd ad-D?n (1149-1210), was long in the service of the amir of Mosul, and was an earnest student of tradition and language. His dictionary of traditions (Kit?b an-Ni/zdya) was published at Cairo (1893), and his dictionary of family names (Kit?b ul-Murassa) has been edited by Ferdinand Seybold (Weimar, 1896).
The youngest brother ? ? ? Diy?' ad-D?n (1163-1239), served under Saladin from 1191 and his son al-Malik al-Afdal who succeeded him, served in Egypt, Samosata, Aleppo, Mosul and Baghdad. He was one of the most famous aesthetic and stylistic critics of Arabian literature. His works include:
The most famous brother was Ali ibn al-Athir (May 13, 1160 - 1233), who devoted himself to the study of history and Islamic tradition. At the age of twenty-one he settled with his father in Mosul and continued his studies there. In the service of the amir for many years, he visited Baghdad and Jerusalem and later Aleppo and Damascus. He died in Mosul. His world history, the al-K?mil fi t-tar?kh (The Complete History), extends to the year 1231. It has been edited by Carl Tornberg, Ibn al-Ath?r Chronicon quod perfectissinum inscribitur (14 vols., Leiden, 1851-1876). The first part of this work up to A.H. 310 (A.D. 923) is an abbreviation of the work of Tabari with minor additions. Ibn Ath?r also wrote a history of the Atabegs of Mosul at-Tar?kh al-atabak?ya, published in the Recueil des historiens des croisades (vol. ii., Paris); a work (Usd al-Ghdba) giving an account of 7,500 companions of the Muslim prophet Muhammad (5 vols., Cairo, 1863), and a compendium (the Lub?b) of Samani's Kit?b ui-A n.~db (cf. Ferdinand Wüstenfeld's Specimen el-Lobabi, Göttingen, 1835).