On 10 June 1830, when he was twenty-five and she was twenty, she married Edward, Lord Seymour, the eldest son of
Edward St Maur, 11th Duke of Somerset, and Lady Charlotte Hamilton (a daughter of the
9th Duke of Hamilton). Together, they had two sons and three daughters: •
Lady Jane Hermione Seymour (1832–1909), who married
Sir Frederick Graham, 3rd Baronet, son of
Sir James Graham, 2nd Baronet, who served as
Home Secretary and
First Lord of the Admiralty. • Lady Ulrica Frederica Jane Seymour (1833–1916), who married the Rt. Hon.
Lord Henry Thynne, the
Treasurer of the Household who was the second son of
Henry Thynne, 3rd Marquess of Bath. •
Edward Adolphus Ferdinand, Earl St. Maur,
suo jure 13th
Baron Seymour (1835–1869), who had two illegitimate children by his maid, Rosina Swan. • Lady Helen Guendolen Seymour (1846–1910), who married
Sir John Ramsden, 5th Baronet, a son of
John Charles Ramsden. The Duchess was survived by her husband by less than a year. After a funeral in the churchyard, she was interred at
Gerrard's Cross, Buckinghamshire.
Descendants Through her daughter Jane, she was a grandmother of eight, including
Margaret, Countess of Verulam and
Violet Graham, Duchess of Montrose. Through her eldest son Ferdinand, she was a grandmother of
Harold St. Maur, who claimed he was legitimate and, after his father's death, declared himself heir to the Dukedom of Somerset. == References ==