John Austen Anstruther-Gough-Calthorpe (born 14 July 1947) is a property magnate and former Chairman of the Watermark Group, son of Sir Richard Anstruther-Gough-Calthorpe, 2nd Baronet and Nancy Moireach Malcolmson.
He married twice. Firstly at the Kensington Register Office on 27 May 1977 to socialite, débutante and banking heiress Lady Mary-Gaye Georgiana Lorna Shaw, 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, and had two more daughters: