(?1600–1671), historian; born in Lackan, Co. Sligo, the last of the line in the Mac Fhir Bhisigh learned family. Educated at Lackan, he may also have studied in the O'Davoren law school. His principal works are transcriptions of earlier materials. These include Dúil Laithne (1643); a fragmentary Annals of Ireland (1643); Chronicon Scotorum (c.1643); and a Catalogue of Irish Bishops (1665). His Leabhar na nGenelach (Book of Genealogies), was in progress in 1650 when he was at the College of St Nicholas in Galway, but he was still adding to it as late as 1664. Sir James Ware employed him in Dublin, 1665–6, and based his writings partly on the result. Mac Fhir Bhisigh was fatally stabbed in an inn at Doonflinn, Co. Sligo, by a man called Crofton who was molesting the young girl in charge.
From The Concise Oxford Companion to Irish Literature in Oxford Reference.