Beatrice

fem. proper name, from French Béatrice, from Latin beatrix, fem. of beatricem "who makes happy," from beatus "happy, blessed," past participle of beare "make happy, bless," which is possibly from PIE *dweye-, suffixed form of root *deu- (2) "to do, perform; show favor, revere." De Vaan finds the connection "semantically attractive, but the morphology is unclear."