Maighnenn of Cill Maighnenn

Saint Maighnenn of Cill Maighnenn is an Irish saint of the undivided Church, remembered in the old martyrologies of Ireland as a bishop.

He was bishop and abbot of Cill-⁠Maighnenn, near Ath-⁠cliath (Dublin), of the race of Colla-⁠da-⁠crioch; his mother was Sinell, daughter of Cenannan and sister of the saint Old Senchell.

The text tells that he kept a ram which carried his psalter and prayer book. A robber stole the ram, and when Maighnenn and his twenty-⁠seven clerics came to the robber's house, he denied the theft on oath, swearing on relics and on Maighnenn's own hand. The ram was found cut up in a pit, and it spoke from below. The robber was struck blind, repented and begged for mercy, and Maighnenn prayed for him, so that his sight was restored and he remained devout as long as he lived.

The Martyrology of Donegal, compiled in 1630 from older sources, commemorates him on 18 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.