The Georgian period in British history spans from 1714 to around 1830, sometimes extended to 1837. It is named after the reigns of the first four Hanoverian kings named George: George I, George II, George III, and George IV. Some historians also include the reign of William IV (1830-1837) in the Georgian era. The period is notable for political, social, cultural developments, and the expansion of the British Empire. The era ended with the accession of Queen Victoria, beginning the Victorian era.