Felix was married, and in 551 at the age of 37, he was made Bishop of Nantes while his wife became a nun.
He then sold his patrimony on behalf of the poor, and built a cathedral within city walls as planned by his predecessor, Evemer.
His municipal improvements at Nantes were praised in the poems of Venantius Fortunatus.
At the entreaties of Bishop Felix, the count withdrew his forces and made peace.
[2] He died at the age of 70 on January 8, 584, having served as Bishop of Nantes for 33 years.