Ian Trethowan's birth name is James Ian Raley Trethowan.
Ian Trethowan was born on October 20, 1922, in High Wycombe, Buckinghamshire, England, UK.
Arthur Trethowan died in 1937.
Illtyd Trethowan died in 1993.
The cast of Election Results - 1959 includes: Ian Trethowan as Himself - presenter
Arthur Trethowan was born in 1863.
Illtyd Trethowan was born in 1907.
M. O. D. Trethowan has written: 'Do environmental statements consider the 'significant effect', direct or indirect, of a proposed development upon archaeology?'
Ian Gillibrand died in 1989.
Ian Peebles died in 1980.
Ian Begg died in 1989.
Ian Nairn died in 1983.