The Lord High Chancellor of Ireland was the highest judicial office in Ireland until the establishment of the Irish Free State in 1922. From 1721 to the end of 1800, it was also the highest political office of the Irish Parliament: the Chancellor was Speaker of the Irish House of Lords. The Lord Chancellor was also Lord Keeper of the Great Seal of Ireland. In all three respects, the office mirrored the Lord High Chancellor of Great Britain.
Diarmait Mac Murchada, was King of Leinster in Ireland from 1127 to 1171. In 1167, he was deposed by the High King of Ireland, Ruaidrí Ua Conchobair. To recover his kingdom, Mac Murchada solicited help from King Henry II of England. His issue unresolved, he gained the military support of the Richard de Clare, 2nd Earl of Pembroke, thus initiating the Anglo-Norman invasion of Ireland.
Maurice FitzThomas FitzGerald, 1st Earl of Desmond in Dublin Castle, Dublin, Ireland was an Irish nobleman in the Peerage of Ireland, Captain of Desmond Castle in Kinsale, so-called ruler of Munster, and for a short time Lord Justice of Ireland. Called "Maurice the Great", he led a rebellion against the Crown, but he was ultimately restored to favour.
James Butler, 4th Earl of Ormond was the son of James Butler, 3rd Earl of Ormond. He was called 'The White Earl', and was esteemed for his learning. He was the patron of the Irish literary work, 'The Book of the White Earl'. His career was marked by his long and bitter feud with the Talbot family.
James Butler, 1st Earl of Ormond, was a noble in the Peerage of Ireland. He was born in Arklow, Wicklow, Ireland and died in Gowran, Kilkenny, Ireland.
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.
John Fitzgeoffrey, Lord of Shere and Justiciar of Ireland was an English nobleman and Crown official.
John FitzThomas was an Anglo-Norman in the Peerage of Ireland, as 4th Lord of Offaly from 1287 and subsequently as 1st Earl of Kildare from 1316.
Gerald FitzMaurice FitzGerald, 5th Earl of Kildare was an Irish peer. Gerald was the son of Maurice FitzGerald, 4th Earl of Kildare and Elizabeth Burghersh.
Thomas FitzJohn FitzGerald, 7th Earl of Kildare, was an Irish peer and statesman of the fifteenth century who held the office of Lord Chancellor of Ireland.
Maurice FitzMaurice FitzGerald was an Irish magnate, soldier, and Justiciar of Ireland from 1272 to 1273. His family would come to epitomise the ideal of cultural synthesis in Ireland, becoming "more Irish than the Irish themselves", fusing Gaelic and Norman customs in Irish identity. "But others say he never enjoyed that lordship himself, but that it passed to the son and grandson of his eldest brother Gerald."
Thomas FitzJames FitzGerald, 7th Earl of Desmond, called 'Thomas of Drogheda', and also known as the Great Earl, was the son of James FitzGerald, 6th Earl of Desmond and Mary de Burgh. He was Lord Deputy of Ireland under the Lieutenancy of Duke of Clarence from 1463 to his death, and in 1464 founded the College of Youghal. His plan to found a University at Drogheda failed due to his judicial assassination.
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 and father of Elizabeth, wife of King Robert the Bruce of Scotland.
Sir Thomas FitzGerald of Laccagh (c.1458–1487) was an Irish lawyer, statesman and soldier who was Lord Chancellor of Ireland under Richard III and Henry VII, but rebelled against Henry and was killed at the Battle of Stoke.
Robert Preston, 1st Viscount Gormanston (1435–1503) was an Irish peer and statesman of the fifteenth century who held the offices of Deputy to the Lord Chancellor of Ireland and Lord Deputy of Ireland.
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 Houses of Kildare and Leinster.
Sir Thomas de Rokeby was a soldier and senior Crown official in fourteenth-century England and Ireland, who served as Justiciar of Ireland. He was appointed to that office to restore law and order to Ireland, and had considerable early success in this task, but he was recalled to England after the military situation deteriorated. He was later re-appointed Justiciar, and returned to Ireland to take up office, but died soon afterwards.
Christopher Preston, 2nd Baron Gormanston was an Anglo-Irish peer and statesman. He was accused of treason and imprisoned in 1418-19, but was soon released and restored to royal favour.
Sir James Keating was an Irish cleric and statesman of the fifteenth century. He was Prior of the Irish house of the Knights Hospitallers, which was based at Kilmainham, Dublin, and a member of the Privy Council of Ireland.
Nicholas de Netterville was a Crown official and judge in Ireland in the late thirteenth and early fourteenth centuries. He was the first notable member of a prominent landowning family in County Meath, who were based mainly at Dowth. His descendants in the seventeenth century acquired the title Viscount Netterville. The family also produced at least two more senior judges in the sixteenth century, Thomas Netterville and Luke Netterville.
