Maria, Duchess of Gloucester and Edinburgh (née Walpole; 10 July 1736 – 22 August 1807) was a member of the British royal family.

She grew up at Frogmore House in Windsor, but her parents were not married, and her illegitimate status hindered her social standing despite her family connections.

The ceremony was performed by Frederick Keppel, the future Bishop of Exeter, and the official witnesses were Sir Edward and his brother, Horace Walpole.

They had three children: There is a portrait of Maria in 1764–65, shortly after she was widowed, painted by Sir Joshua Reynolds, in the Dunedin Public Art Gallery.

[5][6][7]On 6 September 1766, she married Prince William Henry, Duke of Gloucester and Edinburgh, at her home in Pall Mall, London.