Antoinette Cellier, Lady Seton (23 June 1913 – 18 January 1981) was an English film and theatre actress.

[1][2] She was born Florence Antoinette Glossop Cellier in Broadstairs, Kent, England.

Her father, Frank Cellier, was a film and theatre actor, and her mother was Florence Glossop-Harris.

Her grandparents included Augustus Harris, the actor-manager, and François Cellier, musical director of the Savoy Theatre.

[6][7] She made her stage début in London's West End theatre in Firebird.