. "Trethowan, Ian"@en . . . "1922-10-20Z"^^ . . . "BBC executive" . . "1922Z"^^ . . "1990-12-12Z"^^ . "1990Z"^^ . . . "Sir Ian Trethowan"@en . . "Sir James Ian Raley Trethowan (20 October 1922 \u2013 12 December 1990) was a British journalist, radio and television broadcaster and administrator who eventually became director-general of the BBC from 1 October 1977 to 31 July 1982, having previously been managing director of BBC network radio from 1970 to 1976."@en . . "James Ian Raley Trethowan"@en . .