Enid

Probably derived from Welsh enaid meaning "soul, spirit, life". In Arthurian tales she first appears in the 12th-century French poem Erec and Enide by Chrétien de Troyes, where she is the wife of Erec. In later adaptations she is typically the wife of Geraint. The name became more commonly used after the publication of Alfred Tennyson's Arthurian poem Enid in 1859, and it was fairly popular in Britain in the first half of the 20th century.