Father of the House is a term that has by tradition been unofficially bestowed on certain members of some legislatures, most notably the House of Commons in the United Kingdom. In some legislatures the term refers to the oldest member, but in others it refers to the longest-serving member. The term Mother of the House or Mother of Parliament is also found, although the usage varies between countries. It is used simply as the female alternative to Father of the House, being applied when the relevant member is a woman.
The Father of the House is a title that is by tradition bestowed on the senior member of the House of Commons who has the longest unbroken service. If two or more members have the same length of current uninterrupted service, then whoever was sworn in earliest, as listed in Hansard, is named as Father of the House.
In the House of Commons, the only conventional leadership required of the Father of the House is to preside over the election of a new Speaker whenever that office becomes vacant. The relevant Standing Order does not refer to this member by the title of "Father of the House", referring instead to the longest-serving member of the House present who is not a Minister of the Crown (meaning that if the longest-serving member is absent or is a government minister, the next person in line presides).
The current Father of the House of Commons is Sir Gerald Kaufman, Labour MP for Manchester Gorton, who began his continuous service at the 1970 general election.
Kenneth Clarke, Conservative MP for Rushcliffe, and Dennis Skinner, Labour MP for Bolsover, also began continuous service at the 1970 general election, but were sworn in after Kaufman. Should Kaufman's service conclude, Clarke, then Skinner, would be next in line to serve as Father of the House.
The Father of the House is not necessarily the sitting member with the earliest date of first election: David Winnick was first elected in 1966, and is the last current member to have served in the 1960s, but he lost his seat in 1970 and did not return to Parliament until 1979. Michael Foot was the only remaining member from the 1945 election between 1987 and 1992, but was never Father of the House because he had been out of Parliament between 1955 and a 1960 by-election. Similarly, though Sir Winston Churchill was first elected in 1900, he did not become Father of the House until 1959, because he had lost his seat in 1922, and did not return to the Commons until 1924.