High Quality Content by WIKIPEDIA articles! Ian Hedworth John Little Gilmour, Baron Gilmour of Craigmillar, PC,(8 July 1926 – 21 September 2007) was a Conservative politician in the United Kingdom. He was styled Sir Ian Gilmour, 3rd Baronet from 1977, having succeeded to his father`s baronetcy, until he became a life peer in 1992. He served as Secretary of State for Defence in 1974, in the government of Edward Heath. He also served in the government of Margaret Thatcher, as Lord Privy Seal from 1979 to 1981.