All land owned by Irish chieftains of the O'Neill dynasty ("Uí Néill" in Gaelic) and O'Donnell dynasty ("Uí Domhnaill" in Gaelic) was taken from them, and used for the colonists. This land added up to an estimated half a million acres (2,000 km²) in the counties County Donegal (called "Tyrconnell" at the time), Tyrone, Fermanagh, Cavan, Coleraine and Armagh. Most of counties Antrim and Down were privately colonised. 