3 Gaius names that mean gaius for girls, listing Gaius baby names 1-3. Cornelia and Jay are popular names. Jacey is an uncommon name. View Gaius baby names for name meanings, search Gaius names for boys, or search other baby names.
Cornelia ... It was borne in the second century BC by the devoted mother of revolutionary reformers Tiberius and Gaius ... 
Jacey ... Also possibly from the Latin name Gaius meaning "happy". 
Jay ... Also a medieval name possibly from Gaius (Latin) "happy" ...