Ó Meadhra
Ó Meadhra is a Gaelic-Irish surname. According to historian C. Thomas Cairney, the O'Mearas were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC. Provided by Wikipedia-
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