Máel Ísa Ó Raghallaigh, also known as Myles O'Reilly (born 1636), was an Irish harper. Ó Raghallaigh was a native of Killincarra, County Cavan, previously part of the Kingdom of Breifne, which his ancestors had ruled (see East Breifne). He was the composer of the air known as Lochaber, first printed by Thomas Duffet in 1676. See also Myles William Patrick O'Reilly, soldier and publicist, 1825–1880. References New Poems, Songs, Prologues, and Epilogues, etc. , Thomas Duffet, 1676. Tea Table Miscellany, Allan Ramsay Irish Folk Music: A Fascinating Hobby External links http://billhaneman.ie/IMM/IMM-V.html 1636 births 17th-century Irish musicians Irish harpists Irish-language singers Musicians from County Cavan Year of death unknown