Claire

From the Latin clarus, meaning clear or bright, and carried into modern use by Saint Clare of Assisi, the thirteenth-century Italian noblewoman who cut off her hair, refused her family's marriage plans, and founded the Poor Clares beside her friend Francis. Claire is a name of single-syllable certainty; it does not hedge. It crested in France for decades, then moved smoothly into English-language use, bolstered by Claire Danes, Claire Foy's crown, and a thousand novels with a heroine in a wool coat. It currently ranks 67 and is given to about one in 485 American girls. No nickname, no ambiguity, nothing to smudge.