Thady Ó Cianáin (or Thady Keenan) was an Irish composer of the early 17th century. A member of the Ó Cianáin family, he is famous as the composer of the tune "An Tighearna Mhaigheo"/"Lord Mayo". However, Captain Francis O'Neill credited one David Murphy as its composer. References The Learned Family of Ó Cianáin/Keenan, by Nollaig Ó Muraíle, in Clogher Record, pp. 396–402, 2005. External links http://billhaneman.ie/IMM/IMM-V.html Composers from Northern Ireland Musicians from County Fermanagh 17th-century Irish people Harpists from Northern Ireland Year of birth missing Year of death missing