Leslie Stephen,
Dictionary of National Biography…
(1894)
“ Anne Mowbray, the last of her line, was married (15 Jan. 1478) to Richard, duke of York, second son of Edward IV, who had been created Earl of Nottingham, Earl Warrenne, and Duke of Norfolk. But her husband was murdered in the Tower before the marriage was consummated, and Duchess Anne died without issue, and was buried in the chapel of St. Erasmus in Westminster Abbey (Dugdale) . The Mowbray and other baronies fell into abeyance between the descendants of her great grand-aunts Margaret and Isabel, daughters of Thomas Mowbray, first duke of Norfolk [q. v.] ”
