Background: In early medieval times the most important sept of O'Cahill was that located in Co. Galway near the Clare border, the head of which was Chief of Kinelea (Aughty), but by the middle of the thirteenth century their former position as the leading family in Kilmacduagh had been taken by the O'Shaughnessys. The name is uncommon there now, but is found in Co. Clare where a branch of the sept was also established.
Variations: O'Cahill, Cahill, Kahill, Cawhill, Cahille, Cahil, Cahaly, Cahell, Cahel, Caughel, Kahil, Kahel, Caill, Cail
More Info: http://heraldry.celticradio.net/search.php?id=79
Discussion of this family is welcomed.
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