Browning, Charles Henry, (1969). Americans of Royal Descent: Collection of Genealogies Showing the Lineal Descent from Kings of Some American Families ... Page 415.
https://books.google.com/books?id=eyik0rO0HlsC&lpg=PA415&dq=William...
Margaret Stanley, m. first, Sir William Troutbeck, of Prynes Castle, slain at Bloreheath. Inq. P.M. 1465. … and had:
Jane Troutbeck, widow of Sir William Boteler, who m. Sir William Griffith, K.B., of Penrhyn Castle … and had: …