Eric Lubbock, 4th Baron Avebury
He served as the Liberal Member of Parliament for Orpington from 1962 to 1970. He served in the House of Lords, having inherited the title of Baron Avebury in 1971. In 1999, when most hereditary peers were removed from the House of Lords, he was elected by his fellow Liberal Democrats to remain. When he died, he was the longest-serving Liberal Democrat peer.