John Brullaghhaun (John O'Brolchain) was an Irish prelate of the Roman Catholic Church in the mid 18th century.G Catholic
Brullaghhaun was born in County Londonderry. He was educated at Douai, Flanders. He served as Bishop of Derry from 1749 until his death a year later., The Episcopal Succession in England, Scotland and Ireland, volume 1, p. 230 and 320.
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