Sarah Seymour, duchess of Somerset

Sarah Seymour, Duchess of Somerset born Sarah Alston (1631 – 2 November 1692) was an English heiress and benefactor. She married three times including to the Duke of Somerset. She died childless leaving sundry generous legacies. She established Tottenham Grammar School and created the almshouses in Froxfield. She has a memorial in Westminster Abbey.

Life Seymour was born in 1631 her parents were Sir Edward Alston, physician, and importantly Susanna Hussey. Her mother had been born Susanna Hudson and her previous husband had been Jasper Hussey. Hussey had been a London fishmonger and he had left significant and valuable property in Billingsgate. Seymour had just one sibling who was also a daughter. Her father was a fellow of the College of Physicians, and president from 1655 until 1666. At the Restoration he was knighted by Charles II (3 September 1660).

Sarah's first marriage was to George, the son of Sir Harbottle Grimston, 2nd Baronet. They were given Verulam House, near St Albans as a home. It was a love match that ended tragically; their two sons died and then George died in 1655. which cost £39. Sarah left £250 to extend the existing school house and provide free education to poor children from Tottenham. She chose this "parish school" because it was the family seat of her third husband. Sarah left £1,000 to buy apprenticeships and £1,100 to create an endowment to pay the wages of a schoolmaster and an usher.

When the duchess died in 1694, her will included two bequests relevant to Froxfield. It is now the Broad Town Trust, and since 1990 it has been open to young women applicants as well as young men.

The Duchess' will required that almshouses and a chapel should be built in the village of Froxfield for 30 widows of whom a portion were to be widows of clergy. The chapel was to receive £10 a year to pay a clergyman to say daily prayers and every Christmas each of the widows was to receive a new gown.

Her estate of Froxfield Manor was given as an endowment to the almshouses which were called the Duchess of Somerset's Hospital. One of the trustees of the Duchess's will was her brother-in-law, Sir Samuel Grimston, 3rd Baronet, who refused to convey the prescribed lands and income to the hospital until he was ordered to do so by the Court of Chancery. The original almshouses are built of brick around a quadrangle, with the chapel in the centre.