Ferghal Dubh Ó Gadhra, aka Father Nicholas Ó Gadhra O.S.A., Irish cleric and scribe, fl. 1655-after 5th Jun 1686.
Biography
Ó Gadhra was the compiler of the O Gara Manuscript (now RIA MS 23 F 16), which he compiled at Antwerp and Lisle between 1655 and 1659. He "returned to Ireland some time before June 5th, 1686, at which date he certifies that he is safe and sound at Bannada {san mBeinn fhada county Sligo. In a colophon he craves the reader's indulgence for errors and omissions, because he had never a teacher. Evidently his task was a labour of love."
References
Ferghal Dubh Ó Gadhra Wikipedia(Text) CC BY-SA