William IV in the context of Henry Bone

Adelaide (/ˈædɪleɪd/ AD-il-ayd; Kaurna: Tarndanya [ˈd̪̥aɳɖaɲa]) is the capital and most populous city of South Australia, as well as the fifth-most populous city in Australia. The name "Adelaide" may refer to either Greater Adelaide (including the Adelaide Hills) or the Adelaide city centre; the demonym Adelaidean is used to denote the city and the residents of Adelaide. The traditional owners of the Adelaide region are the Kaurna, with the name Tarndanya referring to the area of the city centre and surrounding Park Lands, in the Kaurna language. Adelaide is situated on the Adelaide Plains north of the Fleurieu Peninsula, between the Gulf St Vincent in the west and the Mount Lofty Ranges in the east. Its metropolitan area encompasses over 430 suburbs, extending 96 km (60 mi) from Gawler in the north to Sellicks Beach in the south and 20 km (12 mi) from the western coast to the eastern foothills of the Mount Lofty Ranges.

Named in honour of Adelaide of Saxe-Meiningen, wife of King William IV, the city was founded in 1836 as the planned capital for the only freely settled British province in Australia, distinguishing it from Australia's penal colonies. Colonel William Light, one of Adelaide's founding fathers, designed the city centre and chose its location close to the River Torrens. Light's design, now listed as national heritage, set out the city centre in a grid layout known as "Light's Vision", interspaced by wide boulevards and large public squares, and entirely surrounded by park lands. Colonial Adelaide was noted for its leading examples of religious freedom and progressive political reforms and became known as the "City of Churches" due to its diversity of faiths. It was Australia's third-most populous city until the postwar era.

The Regency era of British history is commonly understood as the years between c. 1795 and 1837, although the official regency for which it is named only spanned the years 1811 to 1820. King George III first suffered debilitating illness in the late 1780s, and relapsed into his final mental illness in 1810. By the Regency Act 1811, his eldest son George, Prince of Wales, was appointed Prince Regent to discharge royal functions. The Prince had been a major force in Society for decades. When George III died in 1820, the Prince Regent succeeded him as George IV. In terms of periodisation, the longer timespan is roughly the final third of the Georgian era (1714–1837), encompassing the last 25 years or so of George III's reign, including the official Regency, and the complete reigns of both George IV and his brother and successor William IV. It ends with the accession of Queen Victoria in June 1837 and is followed by the Victorian era (1837–1901).

Although the Regency era is remembered as a time of refinement and culture, that was the preserve of the wealthy few, especially those in the Prince Regent's own social circle. For the masses, poverty was rampant as urban population density rose due to industrial labour migration. City dwellers lived in increasingly larger slums, a state of affairs severely aggravated by the combined impact of war, economic collapse, mass unemployment, a bad harvest in 1816 (the "Year Without a Summer"), and an ongoing population boom. Political response to the crisis included the Corn Laws, the Peterloo Massacre, and the Representation of the People Act 1832. Led by William Wilberforce, there was increasing support for the abolitionist cause during the Regency era, culminating in passage of the Slave Trade Act 1807 and the Slavery Abolition Act 1833.

The Georgian era was a period in British history from 1714 to 1837, named after the Hanoverian kings George I, George II, George III and George IV. The definition of the Georgian era is also often extended to include the relatively short reign of William IV, which ended with his death in 1837. The subperiod that is the Regency era is defined by the regency of George IV as Prince of Wales during the illness of his father George III. The term Georgian is typically used in the contexts of social and political history and architecture. The term Augustan literature is often used for Augustan drama, Augustan poetry and Augustan prose in the period 1700–1740s. The term Augustan refers to the acknowledgement of the influence of Latin literature from the ancient Roman Republic. The term Georgian era is not applied to the time of the two 20th-century British kings of this name, George V and George VI. Those periods are simply referred to as Georgian.

When Victoria became Queen in 1837 the Georgian era was followed by the Victorian era. The Victorians emphasized moral earnestness and propriety, as well as industrial and scientific progress and scientific advancement. There was a growing tension between faith and doubt and more Realism in literature and art (moving away from Romantic idealism).

The Representation of the People Act 1832 (also known as the Reform Act 1832, Great Reform Act or First Reform Act) was an act of the Parliament of the United Kingdom (indexed as 2 & 3 Will. 4. c. 45) to reform the electoral system in England and Wales and to expand the franchise. The measure was brought forward by the Whig government of Prime Minister Charles Grey, 2nd Earl Grey.

The legislation granted the right to vote to a broader segment of the male population by standardizing property qualifications, extending the franchise to small landowners, tenant farmers, shopkeepers, and all householders who paid a yearly rental of £10 or more. The act also reapportioned constituencies to address the unequal distribution of seats. The act of England and Wales was accompanied by the Scottish Reform Act 1832 (2 & 3 Will. 4. c. 65) and Irish Reform Act 1832 (2 & 3 Will. 4. c. 88).

Dorothea Jordan (née Bland; 22 November 1761 – 5 July 1816) was an Anglo-Irish actress, as well as a courtesan. She was the long-time partner of Prince William, Duke of Clarence (later King William IV), and the mother of 10 illegitimate children by him, all of whom took the surname FitzClarence. She was known professionally as Dorothea Francis and Dorothea Jordan, was informally Dora Jordan, and she was commonly referred to as Mrs Jordan and Mrs FitzClarence.

King William Street is the part of a major arterial road that traverses the CBD and centre of Adelaide, continuing as King William Road to the north of North Terrace and south of Greenhill Road; between South Terrace and Greenhill Road it is called Peacock Road. At approximately 40 metres (130 ft) wide, King William Street is the widest main street of all the Australian state capital cities. Named after King William IV in 1837, it is historically considered one of Adelaide's high streets, for its focal point of businesses, shops and other prominent establishments. The Glenelg tram line runs along the middle of the street through the city centre.

Charlotte of Mecklenburg-Strelitz (Sophia Charlotte; 19 May 1744 – 17 November 1818) was Queen of Great Britain and Ireland as the wife of King George III from their marriage on 8 September 1761 until her death in 1818. The Acts of Union 1800 unified Great Britain and Ireland into the United Kingdom of Great Britain and Ireland. As George's wife, she was also Electress of Hanover until becoming Queen of Hanover on 12 October 1814. Charlotte was Britain's longest-serving queen consort, serving for 57 years and 70 days.

Charlotte was born into the ruling family of Mecklenburg-Strelitz, a duchy in northern Germany. In 1760, the young and unmarried George III inherited the British throne. As Charlotte was a minor German princess with no interest in politics, the King considered her a suitable consort, and they married in 1761. The marriage lasted 57 years and produced 15 children, 13 of whom survived to adulthood. They included two future British monarchs, George IV and William IV; as well as Charlotte, Princess Royal, who became Queen of Württemberg; and Prince Ernest Augustus, who became King of Hanover.

Charles Grey, 2nd Earl Grey (13 March 1764 – 17 July 1845) was a British Whig politician who served as prime minister of the United Kingdom from 1830 to 1834. His government enacted the Reform Acts of 1832, which expanded the electorate in the United Kingdom, and the Slavery Abolition Act of 1833, which abolished slavery in the British Empire.

Born into a prominent family in Northumberland, Grey was educated at Eton College and the University of Cambridge. While travelling in Europe on a Grand Tour, his uncle secured his election as member of parliament (MP) for Northumberland in a 1786 by-election. Grey joined Whig circles in London and was a long-time leader of the reform movement. He briefly served as First Lord of the Admiralty and as foreign secretary in the Ministry of All the Talents from 1806 to 1807 and then remained in opposition for nearly 24 years. He was asked to form a ministry by William IV in 1830, following the resignation of Wellington.

Sir David Wilkie RA (18 November 1785 – 1 June 1841) was a Scottish painter, especially known for his genre scenes. He painted successfully in a wide variety of genres, including historical scenes, portraits, including formal royal ones, and scenes from his travels to Europe and the Middle East. His main base was in London, but he died and was buried at sea, off Gibraltar, returning from his first trip to the Middle East. He was sometimes known as the "people's painter".

He was Principal Painter in Ordinary to King William IV and Queen Victoria. Apart from royal portraits, his best-known painting today is probably The Chelsea Pensioners reading the Waterloo Dispatch of 1822 in Apsley House.

The Royal Pavilion (also known as the Brighton Pavilion) and its surrounding gardens form a Grade I listed former royal residence located in Brighton, England. Beginning in 1787, it was built in three stages as a seaside retreat for George, Prince of Wales, who became the Prince Regent in 1811, and King George IV in 1820. It is built in the Indo-Saracenic style prevalent in India for most of the 19th century. The current appearance, with its Mughal inspired features such as bulbous domes, chhatri-topped minarets and cusped arches, is the work of the architect John Nash, who extended the building starting in 1815. George IV's successors William IV and Victoria also used the Pavilion, but Queen Victoria decided that Osborne House should be the royal seaside retreat, and the Pavilion was sold to the city of Brighton in 1850.

Regency architecture encompasses classical buildings built in the United Kingdom during the Regency era in the early 19th century when George IV was Prince Regent, and also to earlier and later buildings following the same style. The period coincides with the Biedermeier style in the German-speaking lands, Federal style in the United States and the French Empire style. Regency style is also applied to interior design and decorative arts of the period, typified by elegant furniture and vertically striped wallpaper, and to styles of clothing; for men, as typified by the dandy Beau Brummell and for women the Empire silhouette.

The style is strictly the late phase of Georgian architecture, and follows closely on from the neoclassical style of the preceding years, which continued to be produced throughout the period. The Georgian period takes its name from the four Kings George of the period 1714–1830, including King George IV. The British Regency strictly lasted only from 1811 to 1820, but the term is applied to architecture more widely, both before 1811 and after 1820; the next reign, of William IV from 1830 to 1837, has not been given its own stylistic descriptor. Regency architecture is especially distinctive in its houses, and also marked by an increase in the use of a range of eclectic Revival styles, from Gothic through Greek to Indian, as alternatives to the main neoclassical stream.

The Gold State Coach is an enclosed, eight-horse-drawn carriage used by the British royal family. Commissioned in 1760 by Francis Rawdon-Hastings, 1st Marquess of Hastings, for King George III, and designed by Sir William Chambers, it was built in the London workshops of Samuel Butler. It was commissioned for £7,562 (£3.54 m or US$4.19 m in 2022, adjusted for inflation). It was built for George III's coronation in 1761, but was not ready in time; it was completed in 1762.

This state coach has been used at the coronation of every British monarch since William IV in 1831. The coach's great age, weight, and lack of manoeuvrability have limited its use to grand state occasions such as coronations and jubilee celebrations. Until the Second World War, the coach was the monarch's usual mode of transport to and from the State Opening of Parliament.