Michael O'Brien, DD (b Ardconnell 31 March 1876; d Killarney 4 October 1952) was an Irish Roman Catholic Bishop in the mid 20th century.The Post-Reformation Bishops of Kerry Kerry Archaeological Magazine Vol. 4, No. 20 (Apr., 1918), pp. 265-272
O'Brien was educated at St Patrick's College, Maynooth and ordained in 1901.Catholic Hierarchy He was Bishop of Ardfert and Aghadoe from 1927 until his death.
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