Mary Hanover Landgravine of Hesse-Cassel
- Born: 5 Mar 1723, Leicester House, London, England
- Died: 14 Jan 1772, Hanau, Main-Kinzig-Kreis, Hesse, Germany at age 48
The Princess Mary was a member of the British Royal Family, a daughter of George II and Caroline of Ansbach.
Princess Mary was born at Leicester House, London. Her father was HRH The Prince of Wales. Her mother was Caroline of Ansbach, daughter of Johann Friedrich, Margrave of Brandenburg-Ansbach.
At her birth she was styled HRH Princess Mary of Wales.
Her father succeeded, as George II, on 11 June 1727, and she became HRH The Princess Mary
Princess Mary married Frederick of Hesse-Kassel, firstly, by proxy in London on 8 May, then in person on 28 June 1740 at Kassel. They separated in 1754, having had four sons, three of whom survived to adulthood. Her husband succeeded his father as Landgrave of Hesse-Kassel in 1760, and so Mary was technically Landgravine consort for the last twelve years of her life, despite her estrangement from her husband.
Mary died in 1772, aged 48 at Hanau, Germany.