The daughter of General Henry Otway Trevor, 21st Lord Dacre; in 1831 she married the diplomat Sir George Hamilton Seymour.

REFERENCES TO Lady Gertrude Seymour [née Trevor]:

Sydney Smith to Sir George Philips, 20 May 1837 in A Memoir of the Reverend Sydney Smith. By his Daughter, Lady Holland. With a Selection from his Letters, edited by Mrs. Austin 2 vols (London: Longman, Brown, Green, and Longmans, 1855)