Gaius

Roman praenomen, or given name, of uncertain meaning. It is possibly derived from Latin gaudere "to rejoice", though it may be of unknown Etruscan origin. This was a very common Roman praenomen, the most famous bearers being Gaius Julius Caesar, the great leader of the Roman Republic, and his adopted son Gaius Octavius (later known as Augustus), the first Roman emperor. This name also appears in the New Testament belonging to a bishop of Ephesus who is regarded as a saint.

EQUIVALENTS
ANCIENT GREEK: Gaios
ANCIENT ROMAN: Caius, Gaius
BIBLICAL GREEK: Gaios
BIBLICAL LATIN: Gaius
BIBLICAL: Gaius
DANISH: Cai, Caj, Kai, Kaj, Kay
DUTCH: Kai
FINNISH: Kai
FRISIAN: Kai, Kay
GEORGIAN: Gaioz
GERMAN: Kai, Kay
LITHUANIAN: Kajus
NORWEGIAN: Cai, Caj, Kai, Kaj, Kay
PORTUGUESE (BRAZILIAN): Caio
SWEDISH: Cai, Caj, Kai, Kaj, Kay
FEMININE FORMS
POLISH: Gaja, Kaja
SLOVENE: Gaja, Kaja
OTHER FORMS
ARTHURIAN ROMANCE: Cai, Kay
WELSH MYTHOLOGY: Cai, Kay