Patrick MacNicholasStair na hÉireann History of Ireland (1780 – 1852)Catholic Hierarchy was an IrishAn Chartlann Náisiúnta National Archives Roman Catholic clergymanG Catholic who served as Bishop of AchonryDiocesan web-site from 1818 until his death.

MacNicholas was ordained in 1804.'A Dominant Church: The Diocese of Achonry, 1818-1960' Swords, L Dublin;Columba Press; 2005 He was buried at the Old Cemetery, BallaghaderreenHistoric Graves but then re-interred at St Nathy's.

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