Being a son of Otto of Worms, the first Salian duke of Carinthia, William was the uncle of Conrad II, Holy Roman Emperor who appointed him to the bishopric.
William was the fourth son of Otto of Worms by his wife, Judith (whose parentage is uncertain).
[2] He held more than five counties in Franconia before he received Carinthia from his cousin, the future Emperor Otto III in 978.
[6] Werner I, Bishop of Strasbourg, died on a diplomatic mission in Constantinople on 28 October 1028.
[7] Strasbourg was one of the wealthiest German episcopal sees, owing the service of 100 armored knights to the royal army.