Category
page 1Ancient Irish dynasties

Ulaid
thumb|Ulaid during the 10th–11th century and its three main sub-kingdoms, along with some of its neighbouring kingdoms. These boundaries would be used as the basis for the dioceses created in the 12th century.
' (Old Irish, ) or (Modern Irish, ) was a Gaelic over-kingdom in north-eastern Ireland during the Middle Ages made up of a confederation of dynastic groups. Alternative names include , which is the Latin form of , and ', Irish for 'the Fifth'. The king of Ulaid was called the or .

Dál nAraidi
Cruthin kingdom
O'Donnell dynasty
Irish clan
Maguire
family name
Dál Fiatach
Gaelic dynastic-grouping and territory
Tigernán Ua Ruairc
Irish chieftain
O'Byrne family
Polish-Irish family
O'Sullivan
Irish Gaelic clan
O'Rourke
180px|thumb|A Defacement (flag)|defaced O'Rourke crest adorns the coat of arms of [[County Leitrim, their historic patrimony]]
'''O'Rourke''' () was an Irish Gaelic clan based most prominently in what is today County Leitrim.
O'Doherty family
Irish clan based in County Donegal
Uí Fiachrach Aidhne