Margaret Seymour was born in 1918 in
Paddington into an aristocratic family, the daughter of Brig.-Gen.
Lord Henry Seymour and Lady Helen Grosvenor. She was an only child until 1930, when a brother,
Hugh, was born. The family home was
Ragley Hall,
Alcester. Her father was the second son of the
6th Marquess of Hertford and
Lady Mary Hood, daughter of
Alexander Hood, 1st Viscount Bridport. Her mother was the youngest daughter of
Hugh Grosvenor, 1st Duke of Westminster by his first wife, Lady Constance Sutherland-Leveson-Gower, daughter of the
Duke and
Duchess of Sutherland. Her father died in 1939. The following year, her brother succeeded their uncle, the flamboyant cross-dressing
7th Marquess, when he died without a male heir. In October 1940, King
George VI granted her the rank of a daughter of a marquess in honour of her father, who was heir presumptive to his brother. ==Career==