17 13th century Irish people

John de Burgh was the son of Richard Óg de Burgh, 2nd Earl of Ulster, and Margaret de Burgh.

William de Burgh was a member of the House of de Burgh and founder of the House of Burke in Ireland.

Theobald Walter, 1st Chief Butler of Ireland

Theobald Walter was the first Chief Butler of Ireland. He also held the office of Chief Butler of England and was the High Sheriff of Lancashire for 1194. Theobald was the first to use the surname Butler of the Butler family of Ireland. He was involved in the Irish campaigns of King Henry II of England and John of England. His eldest brother Hubert Walter became the Archbishop of Canterbury and justiciar and Lord Chancellor of England.

Affreca de Courcy or Affrica Guðrøðardóttir was a late 12th-/early 13th century noblewoman. She was the daughter of Godred Olafsson, King of the Isles, a member of the Crovan dynasty. In the late 12th century she married John de Courcy. Affrica is noted for religious patronage in northern Ireland.

John FitzThomas , 1st Baron Desmond was the son of Thomas Fitzmaurice, Lord OConnello by his wife Ellinor, daughter of Jordan de Marisco, and sister of Geoffrey de Marisco, who was appointed justiciar of Ireland in 1215. He was the grandson of Maurice FitzGerald, Lord of Lanstephan.

Thomas Fitzmaurice FitzGerald, 2nd Baron of Desmond, was the son of Maurice FitzJohn FitzGerald and grandson of John FitzThomas FitzGerald from whom he inherited the title.

Felix Ua Duib Sláin, often Anglicised as Felix O'Dullany was a medieval Irish bishop.

Gerald FitzMaurice, jure uxoris 1st Lord of Offaly was a Cambro-Norman nobleman who took part with his father, Maurice FitzGerald, Lord of Lanstephan, in the Norman Invasion of Ireland (1169–71). Together with his five brothers and one sister Nesta they founded the notable FitzGerald/FitzMaurice Dynasty which was to play an important role in Irish history.

Hugh de Lacy, 1st Earl of Ulster was an Anglo-Norman soldier and peer. He was a leading figure in the Norman invasion of Ireland in the 12th century, and was created Earl of Ulster in 1205 by King John of England.

Walter de Lacy was lord of Meath in Ireland. He was also a substantial land owner in Weobley, Herefordshire, in Ludlow, Shropshire, in Ewyas Lacy in the Welsh Marches, and several lands in Normandy. He was the eldest son of Hugh de Lacy, a leading Cambro-Norman baron in the Norman invasion of Ireland, and Rohese of Monmouth.

Finghin MacCarthy, also known as Fineen of Ringrone, was King of Desmond from 1251 to his death in 1261, shortly after his famous victory over John FitzGerald, 1st Baron Desmond at the Battle of Callann. He was the son of Donal Gott MacCarthy, King of Desmond and founder of the MacCarthy Reagh dynasty, Princes of Carbery, and for that reason is considered to belong to them.

Gerald FitzMaurice, jure uxoris 1st Lord of Offaly was a Cambro-Norman nobleman who took part with his father, Maurice FitzGerald, Lord of Lanstephan, in the Norman Invasion of Ireland (1169–71). Together with his five brothers and one sister Nesta they founded the notable FitzGerald/FitzMaurice Dynasty which was to play an important role in Irish history.

Richard Óg de Burgh, 2nd Earl of Ulster and 3rd Baron of Connaught, called The Red Earl, was one of the most powerful Irish nobles of the late 13th and early 14th centuries.

William Marshal, 2nd Earl of Pembroke was a medieval English nobleman and was one of Magna Carta sureties. He fought during the First Barons' War and was present at the Battle of Lincoln (1217) alongside his father William Marshal, 1st Earl of Pembroke, who led the English troops in that battle. He commissioned the first biography of a medieval knight to be written, called L'Histoire de Guillaume le Mareschal, in honour of his father.

Thomas FitzMaurice, Lord OConnello, of Shanid, was the eldest son of Maurice FitzGerald, Lord of Lanstephan by his wife, Alice. Thomas was the progenitor of the Geraldine House of Desmond, and brother of Gerald FitzMaurice, 1st Lord of Offaly, progenitor of the Geraldine House's of Kildare and Leinster.

Ímar Ua Donnubáin or Ivor O'Donovan, and possibly nicknamed Gilla Riabach, was a legendary and celebrated petty king, navigator, trader, and reputed necromancer of 13th century Ireland belonging to the O'Donovan family. He may or may not have been the second son of Cathal, son of Crom Ua Donnubáin, from whom the modern Clancahill dynasty descend. In any case Ivor is the ancestor of the historical O'Donovan sept known as the Sliocht Íomhair or "Seed of Ivor", who are generally considered to have been one of the four great septs of the family before being all but destroyed in the 1560s in a conflict with the Clancahill main line. Although mostly legendary, Ivor is possibly referred to in one or two near contemporary sources.

Walter de Burgh, 1st Earl of Ulster, 2nd Lord of Connaught, also spelt Bourke or Burke, was an Irish peer from the House of Burke.