Earl of Desmond was a title in the peerage of Ireland created four times. When the powerful Earl of Desmond took arms against Queen Elizabeth Tudor, around 1578, along with the King of Spain and the Pope, he was confiscated from his estates, some 574 628 acres of land. Since 1640 the title has been held by the Feilding family as a secondary title of the Earl of Denbigh.
Gerald FitzGerald, 14th Earl of Desmond, also counted as 15th or 16th, owned large part of the Irish province of Munster. In 1565 he fought the private Battle of Affane against his neighbours, the Butlers. After this, he was for some time detained in the Tower of London. Though the First Desmond Rebellion took place in his absence, he led the Second Desmond Rebellion from 1579 to his death and was therefore called the Rebel Earl. He was attainted in 1582 and went into hiding but was hunted down and killed.
Piers Butler, 8th Earl of Ormond, 1st Earl of Ossory also known as Red Piers, was from the Polestown branch of the Butler family of Ireland. In the succession crisis at the death of Thomas Butler, 7th Earl of Ormond he succeeded to the earldom as heir male, but lost the title in 1528 to Thomas Boleyn. He regained it after Boleyn's death in 1538.
Gerald FitzMaurice FitzGerald (1335–1398), also known by the Irish Gaelic Gearóid Iarla, was the 3rd Earl of Desmond, in southwestern Ireland, under the first creation of that title, and a member of the Hiberno-Norman dynasty of the FitzGerald, or Geraldines. He was the son of Maurice FitzGerald, 1st Earl of Desmond, by his third wife Aveline (Eleanor), daughter of Nicholas FitzMaurice, 3rd Lord of Kerry. He was half-brother to Maurice FitzGerald, 2nd Earl of Desmond.
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.
Elizabeth Butler, Countess of Ormond, was the wife of Irish peer James Butler, 2nd Earl of Ormond, and the mother of his six children, including James Butler, 3rd Earl of Ormond.
Juliana FitzMaurice, Lady of Thomond was a Anglo-Norman noblewoman, the daughter of Maurice FitzGerald, 3rd Lord of Offaly, and the wife of Thomas de Clare, Lord of Thomond, a powerful Anglo-Norman baron in Ireland, who was a younger brother of Gilbert de Clare, 6th Earl of Hertford. Juliana was married three times; Thomas being her first. She is sometimes referred to as Juliane FitzMaurice.
Connor O'Brien, 3rd Earl of Thomond also spelt Conor and called Groibleach, or the "long-nailed", fought his uncle Donnell over his father's succession during thirty years from 1535 to 1565. He was confirmed as 3rd Earl of Thomond in 1558 by the Lord Deputy of Ireland, Thomas Radclyffe, 3rd Earl of Sussex. O'Brien intrigued with fitz Maurice in 1569 during the 1st Desmond Rebellion and fled to France. He returned and was pardoned in 1571, being restored to his lands at the end of the rebellion in 1573.
Donogh O'Brien, 4th Earl of Thomond and Baron Ibrickan, PC (Ire), was a Protestant Irish nobleman and soldier. He fought for Queen Elizabeth during Tyrone's Rebellion and participated in the Siege of Kinsale. He obtained the transfer of County Clare, where most of his lands lay, from the Province of Connacht to that of Munster. He was made president of Munster in 1605.
Connor O'Brien, 2nd Viscount Clare was the son of Daniel O'Brien, 1st Viscount Clare and Catherine FitzGerald, a daughter of Gerald, 14th Earl of Desmond.
There were six early Barons Inchiquin in Ireland between 1543 and 1654. The title was granted to Murrough O'Brien, the brother of Conor O'Brien, King of Thomond, when he surrendered his Irish royalty to King Henry VIII in 1543. His descendants held the title until 1654, when Murrough O'Brien, 6th Baron Inchiquin was created Earl of Inchiquin.
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 de Clare, Lord of Thomond was an Anglo-Norman peer and soldier. He was the second son of Richard de Clare, 6th Earl of Gloucester and his wife Maud de Lacy, Countess of Gloucester. In 1272 he served a term as Lieutenant of the Duchy of Aquitaine. On 26 January 1276 he was granted the Lordship of Thomond by Edward I of England; he spent the next eight years attempting to conquer it from the O'Brien dynasty, kings of Thomond.
Sir Edward Fitton the elder, was Lord President of Connaught and Thomond and Vice-Treasurer of 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.
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.
James fitz John FitzGerald, 13th Earl of Desmond, also counted as the 14th, ruled 22 years, the first 4 years as de facto earl until the death of James FitzGerald, de jure 12th Earl of Desmond, called court page, who was murdered by James fitz John's brother Totane. James Fitz John maintained himself in power by skilful diplomacy avoiding armed conflict and destruction. He was appointed Lord Treasurer of Ireland in 1547.
Maurice FitzGerald, 9th Earl of Desmond was the brother of James FitzGerald, 8th Earl of Desmond.
James fitz Maurice FitzGerald, 10th Earl of Desmond, also counted as the 11th, plotted against King Henry VIII with King Francis I of France in 1523 and with Emperor Charles V in 1528 and 1529.
David Roche, 7th Viscount Fermoy (1573–1635) was an Irish magnate, soldier, and politician.
