When Beatrice was just six years old, in 1296, at Naples, she was married to John II of Viennois, who was ten years her senior.[1] The couple had two sons:
When her husband died in 1319, Beatrice became a nun at Cîteaux. She remained here until 1340, when she transferred to the Saint-Just-de-Claix Abbey [fr]. Her son founded for her the convent of Saint-Just dans le Royannais.
Beatrice died in 1343 (or 1354). She died in the convent which her sons had founded for her.