Felicite was born in 1134. Felicite's father was Erart Brienne and her mother was Alix Roucy. Her paternal grandparents were Gautier Brienne and Eustachie Bar-Sur-Seine; her maternal grandfather was Andre Roucy. She had a brother named Erart II. She was the younger of the two children. She died at the age of 44 in 1178.