Tyrconnell or
Tirconnell was a political
state in northwest
Ireland up until 1601. It lay in the area now more commonly referred to as
County Donegal, although the kingdom and later
principality of Tyrconnell was larger than that, including parts of Sligo, Leitrim (in present-day
Republic of Ireland),
Tyrone, Fermanagh and a southern part of
Londonderry (in present-day
Northern Ireland). According to
Geoffrey Keating, it included the baronies of Carbury (, in
County Sligo),
Rosclogher (, in
County Leitrim), and
Magheraboy (, mainly Toorah or Tuath Ratha) and
Firlurg (, in
County Fermanagh). As such it had a size varying between that of
Corsica (8,680 km
2) and
Lebanon (10,452 km
2).