Louisa Petty, Marchioness of Lansdowne (; 1755 – 7 August 1789), known as Louisa Petty, Countess of Shelburne from 1779 until 1784, was the youngest daughter of

John FitzPatrick, 1st Earl of Upper Ossory John FitzPatrick, 1st Earl of Upper Ossory (1719 – 23 September 1758) was an Anglo-Irish nobleman who lived in County Cork, Ireland. He was the son of Richard FitzPatrick, 1st Baron Gowran, and Anne ( Robinson) and educated at Queen's Coll ...

, and his wife Lady Evelyn (née Leveson-Gower; daughter of

John Leveson-Gower, 1st Earl Gower John Leveson-Gower, 1st Earl Gower, PC (10 August 1694 – 25 December 1754), was an English Tory politician and peer who twice served as Lord Privy Seal from 1742 to 1743 and 1744 to 1754. Leveson-Gower is best known for his political caree ...

). Petty's eldest brother was

John FitzPatrick, 2nd Earl of Upper Ossory 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. Biography John FitzPatrick was born on 2 May 1745, the son of John Fitz ...

. She had a younger brother

Richard Richard is a male given name. It originates, via Old French, from Frankish language, Old Frankish and is a Compound (linguistics), compound of the words descending from Proto-Germanic language, Proto-Germanic ''*rīk-'' 'ruler, leader, king' an ...

, who also became a noted statesman and soldier, and an elder sister,

Mary Mary may refer to: People * Mary (name), a feminine given name (includes a list of people with the name) Religious contexts * New Testament people named Mary, overview article linking to many of those below * Mary, mother of Jesus, also calle ...

. She married, as his second wife,

William Petty, 2nd Earl of Shelburne William Petty Fitzmaurice, 1st Marquess of Lansdowne, (2 May 17377 May 1805; known as the Earl of Shelburne between 1761 and 1784, by which title he is generally known to history), was an Irish-born British Whig statesman who was the firs ...

, who served as

Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...

for 10 months in 1782–83, and was afterwards created

Marquess of Lansdowne Marquess of Lansdowne is a title in the Peerage of Great Britain created in 1784, and held by the head of the Petty-Fitzmaurice family. The first Marquess served as Prime Minister of Great Britain. Origins This branch of the Fitzmaurice famil ...

. The couple were married on 8 July 1779 and had a son,

Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne, (2 July 178031 January 1863), known as Lord Henry Petty from 1784 to 1809, was a British statesman. In a ministerial career spanning nearly half a century, he notably served as Home Secretary ...

, and a daughter, Lady Louisa Fitzmaurice. She died on 7 August 1789.

References

* * 1755 births 1789 deaths 18th-century Irish people FitzPatrick dynasty Spouses of prime ministers of the United Kingdom British marchionesses Daughters of Irish earls Wives of knights {{UK-noble-stub