Question: Who died at the expedition's camp on the western bank of Koorliatto Waterhole with the objective of crossing Australia from Melbourne in the south, to the Gulf of Carpentaria in the north?

Context paragraphs:
Stephen King Jr.: Stephen King (15 December 1841 – 8 October 1915) was a sketcher, surveyor and explorer.  He was part of the last John McDouall Stuart expedition (1861-1862), successfully crossing Australia from south to north, and was appointed Surveyor of the Overland Telegraph party sent out by Darwent and Dalwood in 1870.

Gulf Country: The Gulf Country is the region of woodland and savanna grassland surrounding the Gulf of Carpentaria in north western Queensland and eastern Northern Territory on the north coast of Australia.  The region is also called the Gulf Savannah.  It contains large reserves of zinc, lead and silver.  The Gulf Country is crossed by the Savannah Way highway.

PacWest Bancorp: PacWest Bancorp () is a bank holding company based in Los Angeles, California, with one wholly owned banking subsidiary, Pacific Western Bank.  Pacific Western Bank has 79 full-service branches located throughout the state of California and one branch in Durham, North Carolina.  Pacific Western provides commercial banking services, including real estate, construction, and commercial loans, and comprehensive deposit and treasury management services to small and medium-sized businesses.  Pacific Western offers additional products and services under the brands of its business groups, CapitalSource and Square 1 Bank.  CapitalSource provides cash flow, asset-based, equipment and real estate loans and treasury management services to established middle-market businesses on a national basis.  Square 1 Bank offers a comprehensive suite of financial services focused on entrepreneurial businesses and their venture capital and private equity investors, with offices located in key innovation hubs across the United States.

Burke and Wills expedition: The Burke and Wills expedition was an Australian exploration expedition in 1860–61 led by Robert O'Hara Burke and William John Wills of 19 men with the objective of crossing Australia from Melbourne in the south, to the Gulf of Carpentaria in the north, a distance of around 3,250 kilometres (approximately 2,000 miles).  At that time most of the inland of Australia had not been explored by non-Indigenous people and was largely unknown to the European settlers.

Ludwig Becker (explorer): Ludwig Becker (5 September 1808 – 29 April 1861) was a German artist, explorer and naturalist.  He was born in Rödelheim near Frankfurt am Main.  He moved to Australia in 1850, and was a member of the ill-fated Burke and Wills expedition.  He died at the expedition's camp on the western bank of Koorliatto Waterhole, Bulloo River in 1861.

John King (explorer): John King (15 December 1838 – 15 January 1872) was an Irish soldier who achieved fame as an Australian explorer.  He was the sole survivor of the four men from the ill-fated Burke and Wills expedition who reached the Gulf of Carpentaria.  The expedition was the first to cross Australia from south to north, finding a route across the continent from Melbourne in Victoria to the Gulf of Carpentaria in Queensland.

Selwyn Range (Australia): The Selwyn Range (also known as the Isa Highlands) is a rugged mountain range near Mount Isa and Cloncurry in north-west Queensland, Australia, composed largely of Proterozoic metamorphic rocks.  It is drained in the north by the Williams and Fullarton rivers, which run into the Gulf of Carpentaria, and in the south by the McKinlay River and its tributary, Boorama Creek which drain also into the Gulf of Carpentaria.  The area is heavily mineralised, containing copper, gold, lead, and zinc, and is important for mining.  It was formerly the home of the Kalkadoon people.

Great Western Bank (1907–present): Great Western Bank whose holding company is Great Western Bancorp, Inc..  (NYSE: [ GWB] ) is a regional bank based in Sioux Falls, South Dakota.  There are over 170 locations in Arizona, Colorado, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota and South Dakota.  Great Western Bank currently has assets of $11.45 billion.

Robert O'Hara Burke: Robert O'Hara Burke (6 May 1821c.  28 June 1861) was an Irish soldier and police officer who achieved fame as an Australian explorer.  He was the leader of the ill-fated Burke and Wills expedition, which was the first expedition to cross Australia from south to north, finding a route across the continent from the settled areas of Victoria to the Gulf of Carpentaria.  The expedition party was well equipped, but Burke was not experienced in bushcraft.  A Royal Commission report conducted upon the failure of the expedition was a censure of Burke's judgement.

William John Wills: William John Wills (5 January 1834 – c.June/July 1861) was a British surveyor who also trained as a surgeon.  He achieved fame as the second-in-command of the ill-fated Burke and Wills expedition, which was the first expedition to cross Australia from south to north, finding a route across the continent from the settled areas of Victoria to the Gulf of Carpentaria.

Supporting paragraphs: Ludwig Becker (explorer) Burke and Wills expedition
Answer: Ludwig Becker