Caius
[ˈkaɪəs]Meaning
Latin archaic spelling of the praenomen Gaius
Background Story
Caius is an archaic Latin spelling of the praenomen Gaius. In early Latin the letter C stood for both /g/ and /k/, so Gaius and Gnaeus were written Caius and Cnaius, and those spellings continued in inscriptions after the letter G was introduced and C was confined to the /k/ sound. In English, Caius is a latinized spelling of the last name of John Keys of Gonville and Caius College, Cambridge.
Variations
Cai, Kayus, Gaius

Related Names
Carus
Masculine given name recorded in Ancient Roman (user-submitted)
Cajus
Of Latin origin, meaning 'rejoice'
Cando
Recorded as a masculine given name in Spanish
Cassian
From the roman cognomen cassianus, derived from the family name cassius
Checo
A nickname for 'Federico', which means peaceful ruler
Clark
A surname of English origin, meaning 'clerk' or 'scholar'
Cosar
Of unknown origin; attested as Arabic خَزَر (ḵazar) and Medieval Greek Χάζαροι (Kházaroi)
Faber
Latin word for "smith", adopted as a surname in the Low Countries and Germany
Adrian
Form of the Latin name Hadrianus, from the place name Hadria
Aksel
Scandinavian variant of Axel