Algernon Percy Banks St. Maur, formerly Seymour, 14th Duke of Somerset, etc. (22 December 1813 – 2 October 1894) was the son of Edward St. Maur, 11th Duke of Somerset and Lady Charlotte Hamilton. He succeeded to the ducal title in 1891; he was also a baronet.
On 17 May 1845, he married Horatia Isabella Harriet Morier, daughter of John Philip Morier. They had four children: