Cormac ua Cillín (died 966) was

abbot Abbot is an ecclesiastical title given to the head of an independent monastery for men in various Western Christian traditions. The name is derived from ''abba'', the Aramaic form of the Hebrew ''ab'', and means "father". The female equivale ...

Tuamgraney Tuamgraney (; archaically spelled ''Tomgraney, Tomgrenei''; ) is a village in eastern County Clare in the west of Ireland and a civil parish by the same name. Situated about a kilometre from the River Graney which flows into Lough Derg, it is a ...

. Cormac was the ancestor of the

Ó Cillín Ó Cillín is the name of a family now rendered as Killeen (also Killian and Killion), found mainly in County Roscommon, County Mayo and County Galway. It is derived from the saint's name Cillian. Annalistic references * ''966: Cormac ua Cil ...

family, who were

coarb A coarb, from the Old Irish ''comarbae'' (Modern Irish: , ), meaning "heir" or "successor", was a distinctive office of the medieval Celtic Church among the Gaels of Ireland and Scotland. In this period coarb appears interchangeable with " erenac ...

s of Tuamgraney. The

Chronicon Scotorum ''Chronicon Scotorum'', also known as ''Chronicum Scotorum'', is a medieval Irish chronicle. Overview According to Nollaig Ó Muraíle, it is "a collection of annals belonging to the ' Clonmacnoise group', covering the period from prehistoric ...

, ''sub anno'' 966, states: * ''Cormac ua Cillín, of the Uí Fhiachrach of Aidne, successor of

Ciarán Ciarán (Irish language, Irish spelling) or Ciaran (Scottish Gaelic spelling) is a traditionally male given name of Irish origin. It means "little dark one" or "little dark-haired one", produced by appending a diminutive suffix to ''ciar'' (" ...

and Comán and comarba of Tuaim Gréne — and by him was built the great church of Tuaim Gréne, and its bell-tower — a sage and an old man and a bishop, rested in Christ.'' Ua Cillín founded St. Cronan's Church, Tuamgraney.

References

{{DEFAULTSORT:Cormac Ua Cillin People from County Clare Christian clergy from County Galway 10th-century Irish abbots 966 deaths