Dorothy Waldegrave was the daughter of William Waldegrave and Juliane Rainsford. Juliane Rainsford was the daughter of Sir John Rainsford (born 1479)
William Waldegrave was the son of George Waldegrave and Ann Drury (born 1480).
George Waldegrave was the son William Waldegrave and Margery Wentword. Margery Wentworth was the daughter of Herny Wentworth and Elizabeth Howard.
William Waldegrave was the son of Thomas Waldegrave and Elizabeth Fray