French: from the Late Latin name Renata, feminine of Renatus ‘reborn’, used by early Christians as a baptismal name celebrating spiritual rebirth in Christ. The name is also used in the English-speaking world, often without the accent and in a highly Anglicized pronunciation (compare Reenie).
Spanish (Tristán): from the popular medieval personal name Tristán, derived from a British Celtic legend which became incorporated into the Arthurian cycle as the story of Tristan and Iseult. The name is of unknown derivation. It was transmitted through Old French and became associated by folk etymology with Latin tristis ‘sad’.