Crom Dubh

Crom Dubh or Crum Dubh (, ), meaning "black crooked ", alt. "Dark Crom", was a Celtic god, for which see The Voyage of Bran, Book II. He may have been represented by megaliths.

Dé Domhnaigh Crum-Dubh – "Crom Dubh Sunday" – is known in Ireland as the first Sunday in August, but in Lochaber is applied to Easter. It appears in the Scottish saying:

DiDòmhnaich Crum Dubh, plaoisgidh mi an t-ugh.

"Crooked black Sunday, I’ll shell the egg."

The exact origin of this saying is unknown, but there is some evidence that Crom Dubh was a fertility god. In later times, he came to be considered an evil god as Christianity spread through Europe as part of the suppression by Christians of the worship of Pagan deities. The element "dubh" (black, dark) had sinister connotations in Christianity, this also perhaps leading to a large part of the eventual association.