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Anne Mortimer (27 December 1390 - c. 22 September 1411) was a medieval English noblewoman who became an ancestress to the royal House of York, one of the parties in the fifteenth-century dynastic Wars of the Roses. It was her line of descent which gave the Yorkist dynasty its claim to the throne. Anne was the mother of Richard, Duke of York, and thus grandmother of kings Edward IV and Richard III.
Arms of Anne Mortimer before her marriage to Richard of Conisburgh
Anne's father was a descendant of Lionel, Duke of Clarence, second surviving son of King Edward III of England, an ancestry which made Mortimer a potential heir to the throne during the reign of the childless King Richard II. Upon Roger Mortimer's death in 1398, this claim passed to his son and heir, Anne's brother Edmund, Earl of March. In 1399, Richard II was deposed by Henry IV, of the House of Lancaster, making Edmund Mortimer a dynastic threat to the new king, who in turn placed both Edmund and his brother Roger under royal custody.
Anne and her sister Eleanor remained in the care of their mother, Countess Eleanor, who, not long after her first husband's death, married Lord Edward Charleton of Powys. Following their mother's death in 1405, the sisters fared less well than their brothers and were described as "destitute", needing £100 per annum for themselves and their servants.
Marriage and issue
Conisbrough Castle, home of the family of Anne Mortimer's husband.
Anne Mortimer died soon after the birth of her son Richard on 22 September 1411. She was probably buried at Kings Langley, Hertfordshire, once the site of Kings Langley Palace, perhaps in the conventual church that houses the tombs of her husband's parents Edmund of Langley and Isabella of Castile.