Crom Dubh

Crom Dubh ([krˠuumˠ d̪ˠuβˠ], [kʰɾɔum t̪uh]), meaning "dark crooked [one]" (also or Crum Dubh, Dark Crom) is a mythological and folkloric figure of Ireland, based on the god Crom Cruach, or "king idol of Ireland", mentioned in the 12th-century dinnseanchas of Magh Slécht.

The festival for Crom Cruach is called Dé Domhnaigh Crum-Dubh (Crom Dubh Sunday) in Ireland, the first Sunday in August, but in Lochaber a term for Easter) as in the Scottish Gaelic saying DiDòmhnaich Crum Dubh, plaoisgidh mi an t-ugh. "Crooked black Sunday, I’ll shell the egg."

Crom Cruach is called the chief Celtic idol of Ireland by Michael J. O'Kelly, and was located on Magh Slécht (The Plain of Prostrations) in County Cavan, surrounded by twelve other idols.