After an abnormally long term of engagement of seven years, Wisigard married Theudebert I, Merovingian king of Austrasia.
But because of a liaison Theudebert had with a Roman woman named Deuteria, the union with Wisigard fell through.
Anew for political reasons Theudebert abandoned Deoteria and finally married Wisigard in 537 or 538.
In 1959 a very rich decorated grave of a Frankish woman was found by Otto Doppelfeld in the Cologne Cathedral.
Based on the dating and the grave furniture, Doppelfeld, at that time director of the Romano-Germanic Museum, interpreted the dead woman as Wisigard.