According to Isidore of Seville, Theudigisel was assassinated because he "defiled the marriages of very many powerful men by public prostitution", and was assassinated by a group of conspirators during a banquet in Seville.
Menurut Isidorus dari Sevilla, Teudigisel dibunuh karena dia "menodai pernikahan orang-orang yang sangat berkuasa dengan pleacuran publik", dan dibunuh oleh sekelompok konspirator saat perjamuan makan di Sevilla.