DEATH OF THE EARL OF OSSORY
It is with extreme regret we have to state, that intelligence was yesterday received of the sudden death of this venerable and truly respectable Noble-man, at his seat, Ampthiil Park, Bedfordshire, on the preceding evening. His Lordship was in the 73d year of his age. Besides the Earldom of Upper Ossory (an Irish Peerage), which had been many years in the family of Fitzpatrick, he was a Peer of the United Kingdom, by the title of Baron Upper Ossory, of Ampthiil. His Lordship had previously represented the County of Bedford many years in the British Parliament, and had long held the important trust of Lord Lieutenant and Custos Rotulorum of the same county. He married in March, 1769, the Hon. Ann Liddell, daughter of the late Lord Ravensworth, and repudiated Duchess of Grafton, by whom he had two daughters, Ladies Anne and Gertrude Fitzpatrick. His Lordship was elder brother to the late General Fitzpatrick, M.P. who, had he survived, would have inherited the Peerages, which are now, we believe, become extinct. The late Earl of Upper Ossory was maternal uncle of the Marquis of Lansdowne and of Lord Holland, sisters of the Noble Earl having married the fathers of these two Noblemen respectively. As a public and private character, his Lordship was uniformly and highly esteemed; and his loss will long be felt and lamented by a numerous tenantry, both in Great Britain and Ireland, as well as by a very extended circle of the most respected relatives, friends, and acquaintance. [Morning Post - Tuesday 03 February 1818, p.3]

John FitzPatrick, 2nd Earl of Upper Ossory FRS DL (2 May 1745 – 13 February 1818), styled 'Lord Gowran' from 1751 to 1758, was an Irish peer and member of parliament.
John FitzPatrick was born on 2 May 1745, the son of John FitzPatrick, 1st Earl of Upper Ossory, and Lady Evelyn (née Leveson-Gower; daughter of John Leveson-Gower, 1st Earl Gower). He had a younger brother Richard, who also became a noted statesman and soldier, and two younger sisters, Mary and Louisa.
He succeeded to his father's title of earl of Upper Ossory in 1758 but as this was a title in the Irish peerage it did not entitle him to a seat in the British House of Lords. In 1767 he was instead elected to the House of Commons for Bedfordshire, a seat he held until 1794. He was also Lord Lieutenant of Bedfordshire from 1771 to 1818. In 1794, he was given the title of 'Baron Upper Ossory', of Ampthill in the County of Bedford, in the Peerage of Great Britain, which gave him a seat in the House of Lords.
In 1763, Fitzpatrick was in Italy with the bibliophile, Topham Beauclerk; where he bought old-master paintings and commissioned paintings from Gavin Hamilton. His is also thought to have been a patron of John Higton, given his depiction of "Dogs at Ampthill Park" in 1810.
On returning to Britain, Fitzpatrick embarked on an affair with Anne Fitzroy, wife of Prime Minister Augustus Fitzroy, 3rd Duke of Grafton, (and daughter of Henry Liddell, 1st Baron Ravensworth). This resulted in the Prime Minister having an affair with Anne Parsons, a courtesan, the birth of a child, the duchess's divorce and her marriage to FitzPatrick in 1769. Like his younger brother Richard, Fitzpatrick was a friend of Charles James Fox, whilst their half-sister Mary FitzPatrick had married Charles James Fox's older brother Stephen Fox, 2nd Baron Holland. As such Fitzpatrick became step-father to Henry Vassall-Fox, 3rd Baron Holland on the death of his parents. He was also a noted friend to Horace Walpole; a large volume of correspondence between Walpole and Fitzpatrick's wife, the Countess of Upper Ossory survives.
John Fitzpatrick died in February 1818, aged 72, when his titles became extinct. His natural son, John, succeeded to parts of his estates and was given the title of Baron Castletown in 1869; however on his death his estate was inherited by his step-son Henry Vassall-Fox, 3rd Baron Holland - who also adopted Ampthill Park as his seat. Fermyn Woods Hall, inherited from his father, passed to his daughters. [Source: Wikipedia]