Castle Caulfield is a large house built in the early seventeenth century on the site of a previous castle belonging to the O'Donnelly family. In the Irish rebellion of 1641, the house was burnt down and, although partially rebuilt after that, fell into disuse at the end of the seventeenth century. Even though a ruin, there are substantial remains. It is located in the village of Castlecaulfield in Couty Tyrone, Ireland ( Irish: Tír Eoghain, Éire).