Earl of Richmond Edmund Tudor was born illegitimate circa 1430; Edmund's father, Owen Tudor, was a Welsh clerk in Catherine's household, and after the death of Catherine's husband, Henry V, Owen and Catherine had a clandestine affair that resulted in the birth of Edmund. He was the son of
Owen Tudor and
Catherine of Valois (?). Earl of Richmond Edmund Tudor married
Lady Stanley Margaret Beaufort, daughter of
Duke of Somerset John Beaufort and
Margaret Beauchamp, in 1455. Earl of Richmond Edmund Tudor died circa November 1456; Edmund died while a prisoner of Yorkists.