Comman is a not uncommon name among the Irish saints, and is often exchanlged with Colman, Comgan, Coeman.
1. Mac Va Theimhue, commemorated February 27. Colgan (Acta Sanctorum, page 417) distinguishes "St. Comgan Hua-Teanne" from St. Gomgan of Glenn-uissen, who is commemorated on the same day, and gives from the Irish Annals the date of the former's death as A.D. 663. O'Donovan thinks he was the brother of Muirchu Maccuthennuis, who wrote, a life of St. Patrick from the dictation of Aldus, bishop of Sletty, and if so he may have been the son of Cogitosus (q.v.).
2. Of Roscommon (Ross-Commain), commemorated December 26. It is thought he died A.D. 742. He is said to have been of the race of Irial, son of Conall Cearnach. He wrote a monastic rule, anid in the Annals, about the year 790, there is mention made of the promulgation of "the law of St. Coman" thoughout the three divisions of Connaught (O'Donovan, Four Masters, 1:343, 349, 395; Todd and Reeves, Mart. Doneg. page 349; Lanigan, Ecclesiastical History of Ireland, 2:225; 3:177).