List of Famous people with last name Ossory

Emilia Butler, Countess of Ossory, born Æmilia van Nassau-Beverweerd, was an Anglo-Dutch courtier.

Florence Fitzpatrick, 3rd Baron Upper Ossory, was the third son of Barnaby Fitzpatrick, 1st Baron Upper Ossory and his wife Margaret Butler, and inherited the title upon the death of his older brother Barnaby Fitzpatrick, 2nd Baron Upper Ossory in 1581. He married Catherine O'More, daughter of Patrick O'More of Abbeyleix, and had six children, including his son Teige, who succeeded as 4th Baron, and Joan who married John Butler of Dunboyne, by whom she was the mother of Edmond Butler, 3rd/13th Baron Dunboyne.

Barnaby Fitzpatrick (c.1478–1575) was the last person to have claim to the kingship of Osraige; forfeiting his ancestral title in favour of being created the first Lord Baron Upper Ossory by King Henry VIII of England, by patent dated 11 June 1541, as part of the King's policy of Surrender and regrant. Barnaby Fitzpatrick was subsequently knighted on 1 July 1543.

Teige Fitzpatrick, 4th Baron Upper Ossory (d. December 1627) was the son and heir of Florence Fitzpatrick, 3rd Baron Upper Ossory, by his wife Catherine O'More. He married Joan Butler, the daughter of Sir Edmund Butler of Cloughgrenan.

Barnaby Fitzpatrick, 6th Baron Upper Ossory, was the heir and successor of Barnaby Fitzpatrick, 5th Baron Upper Ossory. The eldest son of Barnaby Fitzpatrick by his wife Margaret Butler, he took his seat in Parliament on 16 March 1639. He married Catherine Everard, daughter of Sir Edward Everard, and his heir was his eldest son, Barnaby.

Barnaby Fitzpatrick, 5th Baron Upper Ossory was the son and heir of Teige Fitzpatrick, 4th Baron Upper Ossory.

Barnaby Fitzpatrick, 7th Baron Upper Ossory, was the eldest son, heir and successor of Barnaby Fitzpatrick, 6th Baron Upper Ossory by his wife Catherine Everard.

Sir Barnaby Fitzpatrick, 2nd Baron Upper Ossory, was educated at the court of Henry VIII of England with Edward, Prince of Wales. While he was in France he corresponded regularly with King Edward VI. He was active in suppression of Wyatt's rebellion in 1553. He went home to Ireland, where he had had a lifelong feud with the Earl of Ormonde. His wife and daughter were abducted in 1573 by the Grace family, supposedly at Ormonde's instigation. He killed the rebel Rory O'More in 1578.