Killedan townland, parish of Killedan, barony of Gallen, county Mayo, was church land held by the Knox family of Castlereagh, near Killala, who leased it and other lands to the Taaffes. The Taaffes of Killedan were descended from James and Marie Taaffe, Marie was a niece of the Catholic lawyer, Terence MacDonagh. By the time of Griffith's Valuation Reverend Leonard Strong held Killedan townland and James McManus occupied the house. Anthony Rafftery, Raiftearaí, the poet, grew up on this estate. In the 1870s a William Taaffe of the United States of America owned over 800 acres in county Mayo. It is not clear if he was a member of the Taaffe family of Killedan.