Dictionary of Medieval Names
from European Sources

Gaius m. Latin Gaius or Caius, one of the most common Roman praenomina. The origin is uncertain, but it may be related to Latin gaudere 'to rejoice'.

The name of a number of minor New Testament characters, a 3rd C saint, a 3rd C pope, as well as the praenomen of Julius Caesar, Pliny the Elder, and Tacitus. Wycliffite Bible (1395): Gayus.

Italy
Latin
1464 Gaii (gen) CUP-III-I CCXXXI
Cite as: S.L. Uckelman. "Gaius". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Gaius.