William Light in the context of "County of Light"

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 Adelaide Park Lands are a green belt forming a figure-eight configuration of open space on both banks of the River Torrens between Hackney and Thebarton, which encloses and separates the City of Adelaide area (including both the Adelaide city centre and North Adelaide) from the surrounding suburbia of greater metropolitan Adelaide, the capital city of South Australia. They were laid out by Colonel William Light in his design for the city, and originally consisted of 2,300 acres (930 ha) "exclusive of 32 acres (13 ha) for a public cemetery". One copy of Light's plan shows areas for a cemetery and a Post and Telegraph Store on West Terrace, a small Government Domain and Barracks on the central part of North Terrace, a hospital on East Terrace, a Botanical Garden on the River Torrens west of North Adelaide, and a school and a storehouse south-west of North Adelaide.

Over the years there has been constant encroachment on the Park Lands by the state government and others. Soon after their declaration in 1837, 370 acres (150 ha) "were lost to 'Government Reserves'". In 1902, The Herald noted that a total area of 489 acres (198 ha) had been taken from park lands. In 2018, the loss is about 568 acres (230 ha). The part of the Park Lands not in the "Government Reserves" have been managed and maintained by the Adelaide City Council since 1852, and since February 2007, the Adelaide Park Lands Authority has advised council and government.

Whitmore Square, also known as Iparrityi (formerly Ivaritji), is one of five public squares in the Adelaide city centre, South Australia. Occupying 2.4ha (24,000 m), it is located at the junction of Sturt and Morphett streets in the south-western quarter of the Adelaide city grid.

It is one of six squares designed by the founder of Adelaide, William Light, who was Surveyor-General at the time, in his 1837 plan of the City of Adelaide which spanned the River Torrens Valley, comprising the city centre (South Adelaide) and North Adelaide. The square was named in 1837 by the Street Naming Committee after William Wolryche-Whitmore, a British politician who had introduced the South Australia Act 1834 to the British House of Commons. In 2003, as part of the dual naming initiative of the Adelaide City Council, a second name, Ivaritji (later corrected to Iparrityi), was assigned in the Kaurna language of the original inhabitants. Iparrityi (c.1847—1929), also known as Amelia Taylor, was the last full-blood Kaurna person and last speaker of the Kaurna language.

North Adelaide is a predominantly residential precinct and suburb of the City of Adelaide in South Australia, situated north of the River Torrens and within the Adelaide Park Lands. Laid out in a grid plan in three sections by Colonel William Light in 1837, the suburb contains many grand old mansions.

The West Terrace Cemetery, formerly Adelaide Public Cemetery is a cemetery in Adelaide, South Australia. It is the state's oldest cemetery, first appearing on Colonel William Light's 1837 plan of the Adelaide city centre, to the south-west of the city. The whole cemetery is state heritage-listed, including Smyth Chapel, and it is one of the oldest operating cemeteries in Australia.

The Light River (Kaurna: Yarralinka), commonly called the River Light, is a seasonal and significant river in the Mid North region of the Australian state of South Australia named for early surveyor William Light.

The River Light has given its name to the region of the state spanning the mid and lower part of the watercourse, which doesn't dry up over summer. The County of Light (cadastral land division) lies either side of the river for much of its course and gave rise to the name of three former local government bodies within the land division: the District Council of Light (1867–1892), the District Council of Light (1977–1996), and the present-day Light Regional Council, established in 1996. The locality of Lower Light spans the area where the river meets the coast in the Adelaide Plains and the Adelaide Plains Council was initially named Light from 1935 until 1937 after the river.