According to Johann Peter Kirsch, in 856 Ingiltrud, wife of Count Boso the Elder, had left her husband for one of his vassals. Henry Hart Milman says that the Count abandoned his wife.
As she paid no attention to the summons to appear before the Synod of Milan in 860, she was put under the ban. Boso and Ingiltrud's daughter was Teutberga; she married Lothair II in 855.