William I, Count of Wertheim German count (1421–1482) Parents Michael I, Count of Wertheim Sophie of Henneberg-Aschach, Countess of Wertheim Children William of Wertheim Amalia of Wertheim Michael II, Count of Wertheim Siblings Amelia of Wertheim Barbara of Wertheim, Countess of Waldeck Partners Agnes of Isenburg-Büdingen, Countess of Wertheim