Beatrice of Hungary, Dauphine of Viennois

Beatrice of Hungary (1290 – 1343 or 1354) was a Dauphine of Viennois by marriage to John II of Viennois. 
Life.
She was the elder daughter and the second of three children of Charles Martel of Anjou and Klementia of Habsburg. She was a member of the Capetian House of Anjou. Beatrice was thus maternal granddaughter of Rudolf I of Germany and sister of Charles I of Hungary and Clementia of Hungary. 
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. 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 . 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.