When George III died in 1820, the Prince Regent ascended the throne as George IV, with no real change in his powers. By the time of his accession, he was obese and possibly addicted to
laudanum.
George IV's relationship with his wife Caroline had deteriorated by the time of his accession. They had lived separately since 1796, and both were having affairs. Caroline had later left the United Kingdom for Europe, but she chose to return for her husband's coronation, and to publicly assert her rights. However, George IV refused to recognize Caroline as Queen, commanding British ambassadors to ensure that monarchs in foreign courts did the same. By royal command, Caroline's name was omitted from the
liturgy of the
Church of England. The King sought a divorce, but his advisors suggested that any divorce proceedings might involve the publication of details relating to the King's own adulterous relationships. Therefore, he requested and ensured the introduction of the
Pains and Penalties Bill 1820, under which Parliament could have imposed legal penalties without a trial in a court of law. The bill would have annulled the marriage and stripped Caroline of the title of Queen. The bill proved extremely unpopular with the public, and was withdrawn from Parliament. George IV decided, nonetheless, to exclude his wife from his coronation at
Westminster Abbey, on
19 July 1821. Caroline fell ill that day and died soon afterwards, on
7 August of the same year; during her final illness she often stated that she thought she had been poisoned.
George's coronation was a magnificent and expensive affair, costing about £243,000 (for comparison, his fathers coronation had only cost about £10,000). Despite the enormous cost, it was a popular event. In 1821 the King became the first monarch to pay a state visit to Ireland since
Richard II of England. The following year he visited
Edinburgh for "one and twenty daft days." His
visit to Scotland, organised by
Sir Walter Scott, was the first by a reigning British monarch since
Charles I went there in 1633.
George IV spent most of his reign in seclusion at
Windsor Castle, but he continued to interfere in politics. At first, it was believed that he would support Catholic emancipation, as, in 1797, he had proposed a Catholic Emancipation Bill for Ireland, but his anti-Catholic views became clear in 1813 when he privately canvassed against the ultimately defeated Catholic Relief Bill of 1813. By 1824 he was denouncing Catholic emancipation in public. Having taken the coronation oath on his accession, George now argued that he had sworn to uphold the Protestant faith, and could not support any pro-Catholic measures. The influence of the Crown was so great, and the will of the Tories under Prime Minister
Lord Liverpool so strong, that Catholic emancipation seemed hopeless. In 1827, however, Lord Liverpool retired, to be replaced by the pro-emancipation Tory
George Canning. When Canning entered office, the King, who was hitherto content with privately instructing his ministers on the Catholic Question, thought it fit to make a public declaration to the effect that his sentiments on the question were those his revered father, George III.
Canning's views on the Catholic Question were not well received by the most conservative Tories, including the Duke of Wellington. As a result, the ministry was forced to include Whigs. Canning died later in that year, leaving
Frederick John Robinson, 1st Viscount Goderich to lead the tenuous Tory-Whig coalition. Lord Goderich left office in 1828, to be succeeded by the Duke of Wellington, who had by that time accepted that the denial of some measure of relief to Roman Catholics was politically untenable. With great difficulty, Wellington obtained the King's consent to the introduction of a Catholic Relief Bill on
29 January 1829. Under pressure from his fanatically anti-Catholic brother,
the Duke of Cumberland, the King withdrew his approval and in protest the Cabinet resigned
en masse on
4 March. The next day the King, now under intense political pressure, reluctantly agreed to the Bill and the ministry remained in power. Royal Assent was finally granted to the
Catholic Relief Act on
13 April.
George IV's heavy drinking and indulgent lifestyle took its toll on his health by the late 1820s. His taste for huge banquets and copious amounts of alcohol meant that he put on weight and eventually he became obese. This made him the target of ridicule on the rare occasions that he did appear in public. Furthermore, he suffered from
gout, arteriosclerosis, cataracts and possible
porphyria; he would spend whole days in bed and suffered spasms of breathlessness that would leave him half-asphyxiated. He died at about half-past three in the morning of
26 June 1830 at Windsor Castle; he called out "Good God, what is this?" clasped his page's hand and said, "my boy, this is death." He was buried in
St George's Chapel, Windsor on
15 July.
His daughter,
Princess Charlotte Augusta of Wales, had died from
post-partum complications in
1817, after delivering a still-born son; and his eldest younger brother, Frederick, the Duke of York, had died in
1827. He was therefore succeeded by another of his brothers,
Prince William, Duke of Clarence, who reigned as William IV.