George III appoints Ellicott In 1762, English clockmaker John Ellicott was appointed as Royal Clockmaker to King George III. Ellicott was one of the most famous 18th century clockmakers, known for his precision regulators with tempature compensation. Image Credit George III (1738-1820). After Allan Ramsaym 1760-70. RCIN 408691. Royal Collection Trust / © His Majesty King Charles III 2023, https://www.rct.uk/collection/search#/3/collection/408691/george-iii-1738-1820