Seymour was the fifth child and fourth son of Edward Seymour, the son and heir of Sir Edward Seymour, 5th Baronet, on whose death in December 1740 his father inherited manors in Wiltshire and Devon and the baronetcy.
On 11 September 1744, with the unexpected death of George Seymour, Viscount Beauchamp (1725–1744), the only son of Algernon Seymour, 7th Duke of Somerset, the likelihood emerged of Seymour's father succeeding a distant cousin as Duke of Somerset, as the Duke was then aged sixty and his wife was past child-bearing age. On 23 November 1750 the Duke died, Seymour's father duly succeeded to his titles, but not most of his estates, and Seymour thus gained the courtesy title of Lord Francis. Being the son of a Duke gave him better prospects of advancement.
In 1752 Lord Francis was appointed as chaplain-in-ordinary to King George II, and in 1755 he was made Canon of the fourth stall at St George's Chapel, Windsor Castle, a position he held until 1766. He was then appointed as Dean of Wells a benefice he held from 1766 until his death on 16 February 1799.
When his elder brother Webb Seymour's male line died out in 1923, Lord Francis Seymour's great-great-grandson Colonel Edward Seymour inherited the family estates and became 16th Duke of Somerset, although it took him until 1925 to establish his claim to the dukedom.
|Ancestors of Lord Francis Seymour|
- thePeerage.com (1)
- "Seymour, Francis, s. Edward of Seend, Wilts, baronet" in Joseph Foster, Alumni Oxonienses (1715–1886) S-Z (Oxford: Parker & Co, undated, c. 1888), p. 1,276
- The Complete Peerage, vol. XII, pp. 82-83.
- John Britton, Cathedral Antiquities: Wells, Exeter, and Worcester (London, 1836)
- J. M. F. Camp, A concise history of the Cathedral Church of Saint Andrew, in Wells (Shepton Mallet: W. J. Quartley, 1814)
- British History On-line
- thePeerage.com (2)
- W. Phelps, The history and antiquities of Somersetshire (London: J. B. Nichols & Son), 1839
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