He and Ragnemod, bishop of Paris, acted against Gregory at the council and he supported Prætextatus' condemnation.
Leudaste [fr], count of Tours, accused Bertram of having an affair with King Chilperic I's wife Fredegunda.
[1] He and Palladius of Saintes both supported Gundoald in his attempt to usurp the Frankish throne.
Palladius, who was Betram's suffragan bishop took responsibility for this and excused Bertram by saying: "My metropolitan was suffering greatly from sore eyes and I was plundered and treated with indignity and dragged to the place against my will.
"[2] He was related to Queen Ingund, wife of Chlothar I and Bertechramnus bishop of Le Mans.