Granville Leveson-Gower, 1st Marquess of Stafford, KG PC, known as Viscount Trentham from 1746 to 1754 and as The Earl Gower from 1754 to 1786, was a British politician from the Leveson-Gower family. Sitting in the House of Lords, he spent a quarter of a century in the Cabinet.

The Lord Privy Seal is the fifth of the Great Officers of State in the United Kingdom, ranking beneath the Lord President of the Council and above the Lord Great Chamberlain. Originally, its holder was responsible for the monarch's personal (privy) seal until the use of such a seal became obsolete. Though one of the oldest offices in European governments, it has no particular function today because the use of a privy seal has been obsolete for centuries; it may be regarded as a traditional sinecure, but today, the holder of the office is invariably given a seat in the Cabinet of the United Kingdom, and is sometimes referred to as a minister without portfolio.