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Saint

Mernog son of Decell

An Irish saint, commemorated in the Martyrologies of Tallaght and Donegal.

Feast
December 23old style January 5
Era
unknown

Life

Saint Mernog son of Decell is an Irish saint of the undivided Church, remembered in the old martyrologies of Ireland.

The Donegal text calls him a son of Decell and brother of Caisin, and says their mother was Coman, sister of Colum-⁠cille.

The Martyrology of Donegal, compiled in 1630 from older sources, commemorates him on 23 December. The Martyrology of Tallaght, from the early ninth century, lists a similar name on the same day. The date is that of the old Irish calendar, that is, in the old style.

The sources consulted record nothing more about him.

Commemorated the same day December 23