Sonia Melchett was born Sonia Elizabeth Graham in British India on 6 September 1928, the eldest daughter of Lieutenant-Colonel Roland Harris Graham and Kathleen Graham (née Dunbar) Graham. Her father was educated at Cambridge University, Cambridge and Trinity College, Dublin University and participated in the Second World War, serving as a member of Royal Army Medical Corps.
Formerly wed to Julian Edward Alfred Mond, 3rd Baron Melchett, she wed the writer Andrew Sinclair after her husband"s death. Sonia Melchett was educated at the Royal School, Bath. Her younger sister Daphne Kinsman married Major Anthony Henry Ivor Kinsman and became an actress, broadcaster and writer
She was the presenter of the British Broadcasting Corporation news programme Look North and wrote the book Pawn takes Castle.
Sonia Elizabeth Graham (6 September 1928 – 26 April 1947)
Sonia Elizabeth Mond (26 April 1947 – 22 January 1949)
Lady Mond (22 January 1949 – 25 July 1984 )
Right Honourable Lady Melchett (22 January 1949 – 25 July 1984)
Sonia Elizabeth Sinclair (25 July 1984 – )
Known as Sonia Melchett (22 January 1949 – ).
