Wer heiratete Ralph Greystoke, 5th Baron Greystoke?

Ralph Greystoke, 5th Baron Greystoke (9 September 1406 – 1 June 1487) was a member of the English nobility in the early 15th century, and a protagonist during the Wars of the Roses in the north. By his marriage to Elizabeth, daughter of William, Lord FitzHugh he formalized the long-standing alliance that had existed between the two families for some time.