Events from the year 1766 in Great Britain. Incumbents Monarch – George III Prime Minister – Charles Watson-Wentworth, 2nd Marquess of Rockingham (Whig) (until 30 July); William Pitt, 1st Earl of Chatham (Whig) (starting 30 July) Parliament – 12th Events 1 January – Charles Edward Stuart ("Bonnie Prince Charlie") becomes the new Stuart claimant to the throne of Great Britain as King Charles III and figurehead for Jacobitism, on the death of his father James Francis Edward Stuart, Pretender since 1701. 5 February – an observer in Wilmington, North Carolina, reports to the Edinburgh newspaper Caledonian Mercury that three ships have been seized by British Men of War on the charge of carrying official documents without stamps. The strict enforcement causes seven other ships to leave Wilmington for other ports. 20 February – the Pennsylvania Gazette reports that a British sloop outside of Wilmington, North Carolina seized one sloop sailing from Philadelphia and one sloop sailing from Saint Christopher on the charge of carrying official documents without stamps. In response, local residents threaten to burn a Royal Man of War attempting to deliver stamps to Wilmington, forcing the ship to return to the mouth of the Cape Fear River. February – American Revolution: Parliament repeals the Stamp Act which is very unpopular in the British colonies. The persuasion of Benjamin Franklin is considered partly responsible. 18 March – the Declaratory Act asserts the right of Britain to make laws binding in the colonies. 29 May – Henry Cavendish presents his paper "On Factitious Airs". This is generally credited to show the discovery of hydrogen, since it describes the density of 'inflammable air', which formed water on combustion. 30 May – opening of Theatre Royal, Bristol. Also this year, the surviving Georgian Theatre (Stockton-on-Tees) opens as a playhouse. 26 July – construction of the Trent and Mersey Canal begins to connect the River Trent and River Mersey. 30 July – Marquess of Rockingham dismissed as Prime Minister by King George III and is succeeded by William Pitt the Elder. September – "Bread and butter riots": civil unrest across England following a poor harvest. 6 September – Prince William, Duke of Gloucester, marries the illegitimately-born Maria Walpole, Dowager Countess of Waldegrave at her home in Pall Mall, London, an event kept secret from his brother the King until after passage of the Royal Marriages Act 1772. October – Addenbrooke's Hospital, Cambridge, completed.