Gildas

Gildas is a masculine name of Celtic origin, used primarily in French-speaking regions. It is derived from Gildasius, the Latinized form of a Celtic name recorded in later Breton as Gweltaz. The etymology is uncertain: it may stem from Celtic *gweltā, meaning "grass", or from a compound of *kēlyos "companion, servant" and *dēwos "god". The name is most famously borne by Saint Gildas the Wise.

Etymology

The earliest attested form is the Latin Gildasius, which appears in medieval documents. The Breton equivalent Gweltaz reflects the typical mutation of initial gw- to g- in certain contexts. The proposed meaning "servant of God" (from *kēlyos + *dēwos) fits the saint's religious vocation, though the "grass" theory is less supported by onomastic patterns. The name has no clear cognates outside the Brittonic languages.

Saint Gildas the Wise

Saint Gildas (c. 450/500 – c. 570), known as Gildas Badonicus or Gildas Sapiens, was a 6th-century British monk who emigrated to Brittany in later life. He is best known for his work De Excidio et Conquestu Britanniae ("On the Ruin and Conquest of Britain"), a polemical history of the Britons before and after the Anglo-Saxon settlement. This text is a vital primary source for the period, though its accuracy is debated. Gildas founded a monastery at Saint-Gildas-de-Rhuys in Brittany, which became an important religious center. According to the Life of Saint Gildas, he was born at Arecluta (now Dumbarton in Scotland), the son of a northern British king named Caunus or Caw.

Notable Bearers

Though the name is rare in modern use, notable individuals include Gildas Boclé (born 1965), a Belgian water polo player, and Gildas Jaffrennou (born 1967), a French football referee. In popular culture, Gildah, a variant, appears as a character in the video game Harvest Moon.

Related Names

Variants include Gweltaz and the Latinized Gildasius. The etymological composite *kēlyos-dēwos suggests parallels with other names containing the element "god" (e.g., Diodorus, from Greek), though this is speculative.

• Meaning: Possibly "companion of God" or "servant of God"
• Origin: Celtic (Brittonic through Latin)
• Type: First name, also a saint's name
• Usage Regions: France, especially Brittany