Anne St Leger (later Baroness de Ros; 14 January 1476 – 21 April 1526) was a niece of two kings of England, Edward IV and Richard III.
He was the eldest son of Thomas Grey, 1st Marquess of Dorset, who had been married to her older half-sister and whose mother was her aunt, King Edward IV's wife Elizabeth Woodville.
Queen Elizabeth was determined to secure the Exeter inheritance for her descendants by her first marriage, and in 1483, St Leger was declared heir to the entire estate of her father by an Act of Parliament.
The arrangement, detrimental to the interests of the surviving descendants of the Holland family, resulted in a growing unpopularity of King Edward IV and Queen Elizabeth.
[2] Anne St Leger eventually married about 1490 or about 1495 George Manners, 11th Baron de Ros, who fought on behalf of Henry VII in Scotland and for Henry VIII in France, by whom she had eleven children: five sons—Thomas, Oliver, Anthony, Richard and John Manners—and six daughters—Anne Capell, Eleanor Bourchier, Elizabeth Sandys, Catherine Constable, Cecily Manners and Margaret Heneage.