Two entries with the name Felice.
Felice
Sister of Arthur in Tavola ritonda. She married Andremo the Old of Sobicio.
Her daughter, Elyabel, was Tristan’s mother.
Source
La Tavola Ritonda | 1325–1350
Felice
The son of a sorceress named Sargia, sent by his mother to serve Tristan’s son, Tristan the Younger, as squire.
Source
I Due Tristani | 1555