David upheld his support for his niece, the former Empress-consort, who had how many children?
Empress Matilda Empress Matilda (c. 7 February 110210 September 1167), also known as the Empress Maude, was the claimant to the English throne during the civil war known as the Anarchy. The daughter of King Henry I of England, she moved to Germany as a child when she married the future Holy Roman Emperor Henry V. She travelled with her husband into Italy in 1116, was controversially crowned in St. Peter's Basilica, and acted as the imperial regent in Italy. Matilda and Henry had no children, and when Henry died in 1125, the crown was claimed by Lothair II, one of his political enemies.
Empress Feng (Wencheng) Empress Feng (馮皇后) (442–490), formally Empress Wenming (文明皇后, literally "the civil and understanding empress") was an empress of the Chinese/Xianbei dynasty Northern Wei. Her husband was Emperor Wencheng. After her husband's death in 465, she overthrew the autocratic regent Yifu Hun in 466 and became regent over her stepson Emperor Xianwen and remained as such until his adulthood in 467. She subsequently had a falling-out with Emperor Xianwen (who had then become retired emperor) over his execution of her lover Li Yi (李奕), and she assassinated him and reassumed regency over his son Emperor Xiaowen in 476. While Emperor Xiaowen assumed imperial powers upon adulthood, he remained very deferential to her, and she was highly influential until her death in 490.