Background
John Fremantle was born on 22 January 1927. His father was John Walgrave Halford Fremantle, 4th Baron Cottesloe (1900–1994).
John Fremantle was born on 22 January 1927. His father was John Walgrave Halford Fremantle, 4th Baron Cottesloe (1900–1994).
He was educated at Summer Fields School and Eton College. He commanded His Majesty’s Ship Palliser between 1959 and 1961, retiring from the Navy in 1966 with the rank of Commander.
He followed the family tradition set by his ancestor Admiral Thomas Fremantle and joined the Royal Navy in 1945. He was High Sheriff of Buckinghamshire in 1969. He inherited on the death of his father in 1994 the British peerage title Baron Cottesloe.
He also inherited the Austrian noble title "Baron Fremantle", which is an authorized title in the United Kingdom by Warrant of 27 April 1932.
He was Lord-Lieutenant of Buckinghamshire between 1984 and 1997. A Justice of the Peace for Buckinghamshire since 1984, he resides at Swanbourne, where he is commonly referred to as "The Commander".
Personal life
Honorary Elizabeth Wynne Fremantle (b 15 February 1959)
Honorary
Frances Ann Fremantle (b 7 June 1961)
Honorary
Thomas Henry Fremantle (b 17 March 1966).