Cuan (Cuanna, Cuanan, or Cuannache; diminutive of Cu, "a hound;" Lat. Cuanus) is a name of several Irish saints:
1. Of Airbhre in Hy-Cennsealach, Leinster, commemorated July 10, is thought to have succeeded St. Brogan (q.v.) in the abbacy of Mothel, Waterford.
2. Of Cluain-mor (now Clonmore, Cariow), commemorated October 15, is thought to have accompanied St. Moliny (q.v.).
There is another Cuan, "of Ath-eascrach" (now probably Ahasragh, in Galway), who died A.D. 788 or 793, and is commemorated also on October 15.
3. Son of Tigher-nach, of the race of the Nine Hostages, and brother of Sts. Begbile, Colman, and Conna, is commemorated March 2, and lived about the close of the 6th century.
There are also Cuan-Cam and Cuan the anchoret of Lilcah (not identified), who both died A.D. 743; also Cuan of Imleach-Jubhair (Emly), who died A.D. 787; and Cuan of Louth, who died in 823.