Algernon Seymour, 7th Duke of Somerset

General Algernon Seymour, 7th Duke of Somerset (11 November 1684 – 7 February 1750) was the son of Charles Seymour, 6th Duke of Somerset and his wife, Elizabeth. He was styled Earl of Hertford until he succeeded to the Dukedom in 1748.

In 1713, he married Frances Thynne, one of the daughters of Henry Thynne (1675–1708) and a granddaughter of Thomas Thynne, 1st Viscount Weymouth, and with her had two children:

• George Seymour, Viscount Beauchamp (11 September 1725 – 11 September 1744), died young.
• Elizabeth Seymour (1730 – 5 December 1776), married Sir Hugh Smithson 4th baronet later Earl of Northumberland in her right and had issue.

The Duke was one of the richest landowners in England, but as he died with no son his estates were split after his death. The ducal title passed to a distant cousin Edward Seymour, 8th Duke of Somerset. Most of the traditional Percy estates passed to his daughter and her husband (see Alnwick Castle, Northumberland House and Syon House). Petworth in Sussex passed to the duke's nephew Charles Wyndham, 2nd Earl of Egremont. Later dukes of Somerset lived at Maiden Bradley, a far more modest estate than those already mentioned.

Parliament of England
Preceded by Edward Ashe John Jeffreys	Member of Parliament for Marlborough with John Jeffreys 1705–1707	Succeeded by Parliament of Great Britain
Parliament of Great Britain
Preceded by Parliament of England	Member of Parliament for Marlborough with John Jeffreys 1707–1708 Robert Bruce 1708 1707–1708	Succeeded by Robert Bruce Sir Edward Ernle
Preceded by Thomas Forster Sir John Delaval	Member of Parliament for Northumberland with Thomas Forster 1708–1716 Francis Delaval 1716–1722 1708–1722	Succeeded by Francis Delaval Sir William Middleton
Military offices
Preceded by Emanuel Scrope Howe	Colonel of the Earl of Hertford's Regiment of Foot 1709–1715	Succeeded by Henry Harrison
Preceded by The Duke of Northumberland	Captain and Colonel of The Queen's Troop of Horse Guards 1715–1740	Succeeded by The Duke of Marlborough
Preceded by Richard Kane	Governor of Minorca 1737–1742	Succeeded by Earl of Stair
Preceded by The Duke of Argyll	Colonel of the Royal Horse Guards 1740–1742	Succeeded by The Duke of Argyll
Preceded by The Earl of Pomfret	Governor of Guernsey 1742–1750	Succeeded by Sir John Ligonier
Preceded by The Duke of Argyll	Colonel of the Royal Horse Guards 1742–1750	Succeeded by The Duke of Richmond and Lennox
Honorary titles
Preceded by The Earl of Dorset	Lord Lieutenant of Sussex 1706–1750	Vacant Title next held by The Earl of Ashburnham
Preceded by The Duke of Kingston-upon-Hull	Custos Rotulorum of Wiltshire 1726–1750	Succeeded by Robert Sawyer Herbert
Peerage of England
Preceded by Charles Seymour	Duke of Somerset 1748–1750	Succeeded by Edward Seymour
	Earl of Hertford 1748–1750	Succeeded by Francis Seymour-Conway
	Baron Beauchamp 1748–1750	Extinct
	Baron Seymour of Trowbridge 1748–1750
Peerage of Great Britain
New creation	Earl of Northumberland 1749–1750	Succeeded by Hugh Percy
	Earl of Egremont 1749–1750	Succeeded by Charles Wyndham
	Baron Percy 1722–1750	Succeeded by Elizabeth Smithson