In 1999, Labour’s Tony Blair reformed the House of Lords. Before the reform, hereditary peers, i.e. people who have inherited their title, such as the Marquess of Exeter, were all entitled to sit in the House of Lords.
Afterwards, based on the party allegiances of the hereditary peers, a new set of 92 were elected from within their ranks. The Liberal Democrats are entitled, under these reforms, to elect four hereditary peers. John Thurso, 3rd Viscount Thurso, sat in the Lords until 1999.
After being axed in these elections, he sat in the House of Commons as the MP for Caithness and Sutherland until the 2015 General Election, where he lost his seat to the Scottish National Party.
Upon the death of one of the elected hereditary peers, Lord Avebury, Thurso put his name forward to be re-elected to the House of Lords. As did Earl Lloyd-George of Dwfor, Lord Calverley, the Earl of Carlisle, Lord Kennet, Earl Russell, and Lord Somerleyton.
Unfortunately for them, Viscount Thurso won with 100% of the votes. Or, in simpler terms, all three: Lord Addington, the Earl of Glasgow, and the Earl of Oxford and Asquith.