George de la Poer Beresford, 1st Marquess of Waterford, KP, PC (Ire), an Irish politician, known as George Beresford, 2nd Earl of Tyrone from 1763 to 1789, dies on December 3, 1800.

Beresford is the eldest surviving son of Marcus Beresford, 1st Earl of Tyrone, and his wife, Lady Catherine Power, suo jure Baroness de la Poer. Among his siblings are John Beresford, who marries Countess Anne Constantin de Ligondes, and William Beresford, 1st Baron Decies, who marries Elizabeth FitzGibbon, sister of John FitzGibbon, 1st Earl of Clare.

Beresford’s mother is the only daughter of James Power, 3rd Earl of Tyrone (who is also the 8th Baron Power) and the former Anne Rickard, eldest daughter and co-heiress of Andrew Rickard, of Dangan-Spidoge. His father is the only son of Sir Tristram Beresford, 3rd Baronet, and his wife Nichola Sophia Hamilton, youngest daughter of Hugh Hamilton, 1st Viscount of Glenawly.

Beresford is educated at Kilkenny College and Trinity College Dublin.

From 1757 to 1760, Beresford is a Member of the Irish House of Commons for County Waterford from 1757 to 1760, and for Coleraine from 1761 until 1763, when he inherits his father’s earldom, enters the Irish House of Lords and is admitted to the Privy Council of Ireland.

Beresford is Governor of Waterford from 1766 and Custos Rotulorum of County Waterford from 1769 to 1800, during which time he is made a Knight of St. Patrick, created Baron Tyrone in the Peerage of Great Britain in 1786, and elevated as a marquess in 1789.

On April 19, 1769, Beresford marries Elizabeth Monck, the daughter of Henry Monck, of Charleville, and the former Lady Isabella Bentinck, second daughter of Henry Bentinck, 1st Duke of Portland. Elizabeth is also the cousin of Charles Monck, 1st Viscount Monck. Together, they are the parents of eight children:

• Marcus Beresford, styled Lord Le Poer (1771–1783), who dies young.
• Henry de la Poer, Beresford, 2nd Marquess of Waterford (1772–1826), politician who marries Lady Susanna Hussey Carpenter, only daughter of George Carpenter, 2nd Earl of Tyrconnell, by his second wife Hon. Sarah Hussey Delaval, a younger daughter of John Delaval, 1st Baron Delaval, in 1805.
• Most Rev. Lord John Beresford (1773–1862), Archbishop of Armagh.
• Lord George Thomas Beresford (1781–1839), politician who marries Harriet Schutz, daughter of John Bacon Schutz, of Gillingham Hall, in 1808.
• Lady Isabella Anne Beresford (1776–1850), marries Sir John William Head Brydges, MP, of Wootton Court, second son of Edward Brydges), in 1812.
• Lady Catharine Beresford (1777–1843)
• Lady Anne Beresford (1779–1842)
• Lady Elizabeth Louisa Beresford (1783–1856), who marries Maj. Gen. Sir Denis Pack in 1816. After his death in 1823, she marries Sir Thomas Reynell, 6th Baronet, in 1831.

Beresford also has two illegitimate sons, William Carr Beresford, 1st Viscount Beresford, and Sir John Beresford, 1st Baronet.

Beresford dies on December 3, 1800, and his titles pass to his eldest surviving legitimate son, Henry.

(Pictured: George Beresford, First Marquess of Waterford, oil on canvas by Gilbert Stuart (1755-1828))