Question: Who is William Stanley (Battle Of Bosworth)'s mother?
Answer: Joan Goushill

He was a titular King of Mann, and stepfather to King Henry VII of England. He was the eldest son of Thomas Stanley, 1st Baron Stanley and Joan Goushill. A landed magnate of immense power, particularly across the northwest of England where his authority went almost unchallenged, even by the Crown , Stanley managed to remain in favour with successive kings throughout the Wars of the Roses until his death in 1504