William IV was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until his death. He was the third son of King George III. William married Adelaide of Saxe-Meiningen and had two daughters (Charlotte and Elizabeth) but was also known to have ten illegitimate children.

Note that on coins, William IV is often written as GULIELMUS IIII .

		1831 Gold Sovereign Mintage: 598,547
		1831 Gold Sovereign Proof Mintage: 225
		1832 Gold Sovereign Mintage: 3,737,065
		1833 Gold Sovereign Mintage: 1,225,269
		1835 Gold Sovereign Mintage: 723,441
		1836 Gold Sovereign Mintage: 1,714,349
		1837 Gold Sovereign Mintage: 1,172,984