| Birth Name: | John Austen Anstruther-Gough-Calthorpe |
| Birth Date: | 1947 7, df=y |
| Nationality: | British |
| Occupation: | Property magnate |
| Children: | 5, including Isabella Calthorpe and Gabriella Wilde |
John Austen Anstruther-Gough-Calthorpe (born 14 July 1947) is a property developer and former Chairman of the Watermark Group, son of Sir Richard Anstruther-Gough-Calthorpe, 2nd Baronet, and Nancy Moireach Malcolmson.
John serves as a director for the Ellis Campbell Group and Hintlesham Holdings. He is also a trustee of the Elvetham Charitable Trust and the Newcastle Charitable Trust.
He married twice. Firstly at the Kensington Register Office on 27 May 1977[1] to socialite, débutante and banking heiress Lady Mary-Gaye Georgiana Lorna Curzon, born on 21 February 1947, the daughter of the 6th Earl Howe, and former wife of Kevin Esmond Peter Cooper-Key, whom she married in 1971 and divorced in 1976 and by whom she had a daughter Pandora Lorna Mary Cooper-Key, born in 1973, who works at Vivienne Westwood. The couple divorced in 1986 and had three children:
He married secondly in 1987 Vanessa Mary Teresa Llewellyn Hubbard (b. 21 February 1958), former wife of Sir David St Vincent Llewellyn, 4th Baronet, with whom he had two daughters: