Caswallan as a Baby Name. Meaning and Origin of Caswallan

What is the meaning of the name Caswallan ?

The baby name Caswallan is a Male name , 3 syllables long and is pronounced /kæsˈwælən/ (KAS-WAL-ən); Welsh variant: /kasˈwalan/ (kas-WAH-lan).

Caswallan is Welsh in Origin.

Caswallan is an Anglicized Welsh form of Caswallawn, ultimately from Brittonic and recorded in Latin as Cassivellaunus. The name likely combines Proto-Celtic cassi- (interpretations include “tin/bronze,” “curly,” or by extension “valiant”) with uellaunos “chief, ruler.” Taken together, it is commonly glossed as “supreme chief” or “commander of hosts,” conveying martial leadership and high status.

The name belongs to the 1st‑century BCE British war leader who resisted Julius Caesar; he appears in Caesar’s Commentarii, Geoffrey of Monmouth (as Cassibelanus), and Middle Welsh tradition as Caswallawn ap Beli Mawr in the Triads and the Mabinogion. Variants include Caswallawn (standard Welsh), Caswallon, Caswallan, Cassivellaunus, and Cassibelanus; compare but do not confuse with Cadwallon. The modern given name is rare, occasionally revived in Wales and among enthusiasts of Celtic legend; Cas serves as a natural short form.

⚙ Caswallan is absent from every birth registry and name dataset we follow. That's typically a sign of a rare name, a regional or traditional one, or a modern coinage. Either way, it's a name very few children share.