Mulhern / Mulherrin

The names Mulhern and Mulherrin in Ireland are derived from the native Gaelic O'Maoilchiarain sept that was located in County Roscommon. They also anglicized their name to Mulkerrin and to Mulkerrill in County Galway. These families were the 'erenaghs of Ardcarne' and produced many noteworthy ecclesiastics.