| Honorific-Prefix: | The Right Honourable |
| The Lord Trevor | |
| Office1: | Lord President of the Council |
| Monarch1: | George II |
| Primeminister1: | Sir Robert Walpole |
| Term Start1: | 8 May |
| Term End1: | 19 June 1730 |
| Predecessor1: | The Duke of Devonshire |
| Successor1: | The Earl of Wilmington |
Thomas Trevor, 1st Baron Trevor, (8 March 165819 June 1730) was a British judge and politician who was Attorney-General and later Lord Privy Seal.
Trevor was the second son of Sir John Trevor III. and was educated privately before entering the Inner Temple (1672) and Christ Church, Oxford. He was called to the bar in 1680.
He was made King's Counsel in 1683 and was knighted and made Solicitor General in 1692, being promoted to Attorney-General in 1695. In 1701 Trevor was appointed Chief Justice of the Common Pleas. He was also a Privy Councillor (1702–1714) and First Commissioner of the Great Seal (1710). In 1712 he was created a peer as Baron Trevor of Bromham. He was created as one of Harley's Dozen when twelve new peerages were distributed to shift the political balance in the Whig-dominated House of Lords towards the Tories in order to secure the Peace of Utrecht.
On the accession of George I in 1714 he was deprived of his offices for alleged Jacobite sympathies, but from 1726 he was restored to favour as Lord Privy Seal (1726 to his death), one of the Lords Justice Regents of the Realm (1727), Lord President of the Council (1730) and Governor of the Charterhouse.
In 1707 he was elected a fellow of the Royal Society.[1]
In 1690 he married Elizabeth (1672-1702), daughter of John Searle of Finchley, by whom he had 4 children:
In 1704 he married Anne Barnard, (c. 1670–1723), the daughter of Robert Weldon (or Wilding), a merchant in Fleet Street, London and Colonel of the Tower Hamlets Regiment. Anne had previously been married to Sir Robert Barnard of Brampton, 3rd Baronet, with whom she had had six children.[2] By Anne, Trevor had two further children who lived to adulthood: