Callin Surname History

The surname Callin was first found in County Roscommon (Irish: Ros Comáin) located in central Ireland in the province of Connacht, where they held a family seat from very ancient times.

Caillin (fl. 560), was an Irish saint, "son of Niata, descended from Rudraighe, whose grandson, Fergus Mac Roigh, flourished at the beginning of the Christian era. His mother was Deighe, granddaughter of Dubhthach, chief poet of King Laogaire in the time of St. Patrick. The authority for the history of St. Caillin is the ancient ‘Book of Fenagh,’ a series of poetical rhapsodies, written about 1400, a copy of which with a connecting narrative in prose was made in 1516. we may gather the following facts of St. Caillin's history from this curious repertory of ancient traditions: ‘The descendants of Medbh and Fergus, viz. the children of Conmac, Ciar, and Corc, grew and multiplied throughout Ireland. The children of Conmac especially were in Connaught.’ Those were the Conmaicne of Dunmor, kinsmen of Caillin's. Resolved to remedy the congestion of the population by killing each other, the Conmaicne would no doubt have carried out their plan but for the interference of St. Caillin. By the advice of an angel they sent messengers to him at Rome, whither he had gone for his education." 2