Anne de Beauchamp was born at Caversham Castle in Oxfordshire. She married Richard Neville 'the Kingmaker' – and her brother Henry Beauchamp married Richard's sister Cecily – in 1436. Following the death of Anne's father in 1439, and subsequently that of her brother Henry in 1446, and his infant daughter Lady Anne in 1449, Neville inherited the title and the considerable estates of the Earldom of Warwick through his wife. However, this was contested by Anne's three older half-sisters, children of her father's first marriage to Elizabeth, heir of Berkeley. One of these, Lady Eleanor, was married to Edmund Beaufort, 2nd Duke of Somerset. The litigation over the Warwick inheritance only fuelled the enmity between this branch of the Nevilles and the Beauforts who were closely related. Anne Beauchamp's husband, Richard, was the grandson of Lady Joan Beaufort, Countess of Westmorland, sister of the Duke's late father. Law considered that Anne Beauchamp being a full-blooded aunt of the last countess was more eligible to inherit than her older half-sisters, who were thus not coheirs with her, including the eldest – Lady Margaret, Countess of Shrewsbury. Richard Neville succeeded in keeping the Warwick and Despencer estates intact.
Anne died in obscurity, having survived her husband, her daughters and the sons-in-law who had effectively disinherited her. She was in sanctuary at Beaulieu Abbey in 1486 when she petitioned Henry VII for the return of her estate. She recovered a small portion, but only on condition that she broke the entail and remit the bulk of them to Henry VII. "The 'Warwick and Spencer lands', her own patrimony became part of the crown estate."
Fictional portrayals
Anne, Countess of Warwick appears prominently in the Philippa Gregory novels The White Queen, The Red Queen, and The Kingmaker's Daughter, and is played by Juliet Aubrey in the 2013 television adaptation of all three novels, The White Queen. She is depicted as a coldly ambitious mother to Isabel and Anne Neville, and her husband's staunchest supporter. A more sympathetic portrayal of the Countess of Warwick is in the novel The Sunne in Splendour by Sharon Kay Penman, and a maternal view of her is observed in The Reluctant Queen by Jean Plaidy. Novelist Sandra Worth represents the Countess as her husband's conscience in her five novels about the Wars of the Roses. The Countess is depicted as being especially close to her grandson Edward of Middleham. Another sympathetic portrayal of Anne Beauchamp is Wife to the Kingmaker, a 1974 title by Sandra Wilson.