Richard Butler of Kilcash
Richard Butler of Kilcash (1615–1701) was the third son of Thomas Butler, Viscount Thurles and brother of James, 1st Duke of Ormonde.
Richard's descendants would take over the earldom of Ormond following the failure in 1658 of the senior branch of the family.
John Butler of Kilcash
John Butler of Kilcash( died 10 May 1570) was the third son of James Butler, 9th Earl of Ormond and Lady Joan Fitzgerald.
Edmund MacRichard Butler
Sir Edmund MacRichard Butler of Polestown( 1420 – June 13, 1464) was the eldest son of Sir Richard Butler of Polestown and adopted the Gaelic title of The MacRichard of Ossory.
Thomas Butler of Garryricken
Thomas Butler of Garryricken (died 1738), also known as Thomas Butler of Kilcash and sometimes distinguished by his title of Colonel, was an Irish landowner.
He succeeded to the estates of his grandfather Richard Butler of Kilcash.
His brother Christopher was the Catholic Archbishop of Cashel and Emly.
Thomas Butler fought for the Jacobites in the Williamite war and was taken prisoner at the Battle of Aughrim.
His son John became, "de jure", the 15th Earl of Ormond.
Edmond Butler (Polestown)
Edmond Butler of Polestown,( 1595- 21 April 1636), was a descendant of the Butler family- the Earls of Ormond.
He was the eldest son of Sir Richard Butler of Poletown.
His brothers were Richard, Peter and Walter.
His uncle Peter founded the" Roscrea" cadet branch of the family, which is in turn descended from the" Polestown" cadet branch.
He held the office of Member of Parliament( M.P.) for County Kilkenny from 1634 to 1635.
Thomas Butler, Viscount Thurles
Thomas Butler, Viscount Thurles (before 1596 – 15 December 1619) was the son and heir apparent of Walter Butler, 11th Earl of Ormond (1559 – 1632/3) (whom he predeceased) and Helen Butler.
He resided at Thurles Castle, Thurles, County Tipperary.
He was the father of the noted Anglo-Irish statesman and Royalist commander James Butler, 1st Duke of Ormonde.
Walter Butler, 16th Earl of Ormonde
Walter Butler( 1703 – 1783), also known as Walter Butler of Kilcash, and Walter Butler of Garryricken, was the" de jure" 16th Earl of Ormond and 9th Earl of Ossory.
He did not assume these titles as he thought them forfeit as a result of the attainder of the 2nd Duke of Ormonde.
In the peerage of Ireland, the titles were successfully claimed in 1791 by his son John, the 17th Earl.
Sir Richard Butler (Poletown)
Sir Richard Butler of Poletown, County Kilkenny( died 20 August 1619), was a descendant of the Butler family- the Earls of Ormond.
He was the third son of Edmond Butler of Polestown.
He was invested as a Knight on 21 April 1605.
His older brother Peter founded the" Roscrea" cadet branch of the family, which is in turn descended from the" Polestown" cadet branch.
Theobald Butler of Polestown
Theobald Butler was the illegitimate son of Sir James Butler of Polestown and his wife Sabh Kavanagh.
He was the elder brother of Piers Butler, 8th Earl of Ormond and of Edmond Butler of Polestown.
Richard Butler, 1st Earl of Arran
Richard Butler, 1st Earl of Arran, Baron Butler of Cloughgrenan, Viscount Tullough( 15 July 1639 – 25 January 1685 /1686) was an Irish peer, the fourth son of James Butler, 1st Duke of Ormonde.

Question: What nationality is Richard Butler Of Kilcash's father?
Answer: Irish