King George IV was on the throne before King William IV.
George IV
William Rathbone IV died in 1809.
William IV, reigned 1830-1837. He was one of Victoria's uncles.
His Grandson King George III.
1830
Nothing. William IV ruled in the nineteenth century.
King William IV and Queen Adelaide.
William Sprague IV died on September 11, 1915 at the age of 84.
Frederick William IV of Prussia died on 1861-01-02.
King William III ruled England starting in 1689. He died in 1702 and was replaced on the Throne of England by his son John William Friso, or William IV.
King William IV is often called 'The Sailor King'. He served in the Royal Navy when he was young.