- Both the Woodfield and Killedan Taaffes were descended from James Taaffe of Greyfield, county Mayo and his wife Mary, granddaughter of Terence MacDonagh. A branch of this family inherited some of the Ferrall lands in county Roscommon and in the 1870s Major Henry Taaffe Ferrall of Moylurg, Boyle, owned 5,140 acres in county Roscommon. In 1876 James Taaffe of Woodfield held an estate of 9030 acres at Woodfield, near Kilkelly, in the parish of Aghamore, barony of Costello, county Mayo. He sold 5808 acres to the Congested Districts' Board on 16 May 1904.
- 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.