[1] On 10 October 1743, Seymour matriculated at Queen's College, Oxford, aged eighteen.
[3] 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.
In 1752 Lord Francis was appointed as chaplain-in-ordinary to King George II,[3] 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[5][6] a benefice he held from 1766 until his death on 16 February 1799.