George was the eldest son of George III and Queen Charlotte and was born on 12th August 1762 at St James' Palace. His high spirits, agreeable manners and air of fashion earned him the nickname 'Prinny'. But he ran up many debts through his extravagance and the construction of his pleasure dome at Brighton. Due to his father's illness he was proclaimed Prince Regent in 1811. The final defeat of Napoleon at Waterloo occurred during the Regency. He succeeded his father on 29th January 1820.
His attempt to marry the widowed Roman Catholic Maria Fitzherbert was a contravention of the Royal Marriages Act so was deemed illegal. He married his first cousin Princess Caroline of Brunswick on 8th April 1795 at St James' Palace and they disliked each other on sight. But they did have a daughter (who died in childbirth) before their separation.
George IV's coronation in the Abbey on 19th July 1821 was a superbly extravagant pageant that cost a staggering £230,000. He had a new crown containing over 12,000 diamonds specially made. The ageing and obese King sweltered in his suit, thick velvet coronation robes, a long curled wig and plumed hat, and he used no fewer than nineteen handkerchiefs to mop his heavily perspiring brow! Meanwhile, outside the Abbey, his estranged wife, Caroline of Brunswick, was desperately trying to get in to the church to be crowned consort. George IV, adamant she would not be crowned, ordered those guarding the entrances to the Abbey to refuse her entry. Despite trying every door into the church, Caroline finally accepted defeat and left. Some panels from a coloured panorama of the coronation procession can be seen in the Queen's Diamond Jubilee Galleries at the Abbey.
A musical festival to celebrate the coronation was held in the Abbey on 24th July 1821 before the special seating was removed.
He died on 26th June 1830 and was buried at Windsor. Caroline is buried in Brunswick.
The coronation of George IV by Sir George Nayler, 1824
George IV by E.A. Smith, 1999
Oxford Dictionary of National Biography 2004
British Royal and State funerals.... by M. Range 2016