Castiel peaked in 2019 and holds rank #816 with 3,660 SSA records. It's a name that owes its American existence almost entirely to one television character — and yet manages to have linguistic roots that predate that show by centuries. That combination makes it an unusual case study in how pop culture and etymology interact.
The Supernatural Connection
The name Castiel entered American consciousness through the angel character Castiel in the CW drama Supernatural, which ran from 2005 to 2020. The character, played by Misha Collins, became one of the show's most beloved figures — an ancient, deadpan, fiercely loyal angel struggling to understand humanity. The SSA chart for the name barely registers before 2008, the year Castiel first appeared on screen, and tracks the show's popularity almost perfectly. It's one of the cleaner examples of direct television naming influence in recent SSA history.
The Linguistic Underpinning
The show's writers drew on the Hebrew tradition of angelic names ending in -el (meaning God): Michael, Raphael, Gabriel, Uriel. Castiel fits this pattern, with casti- possibly connecting to Latin castus (pure). It's not a name from the Hebrew Bible itself, but it's constructed to sound like one — which is part of why it reads as dignified and ancient rather than invented. The -el ending gives it natural kinship with Gabriel and Samuel.
Counter-Reading
Castiel is unmistakably a fandom name in 2026. Parents who love Supernatural will feel that connection warmly; parents unfamiliar with the show will simply hear a striking, unusual name with angelic resonance. The honest note is that any child named Castiel will hear the Supernatural reference from adults throughout his life. If that's a joy rather than a burden, this name has everything going for it — compare its arc to similar names at rising names.