Visit of George IV to Scotland
George IV's visit to Scotland in 1822 was the first visit of a reigning monarch to Scotland in nearly two centuries, the last being by Charles II for his Scottish coronation in 1651. Government ministers had pressed the King to bring forward a proposed visit to Scotland, to divert him from diplomatic intrigue at the Congress of Verona.
Source: Wikipedia — Visit of George IV to Scotland (CC BY-SA 4.0)