Question: Who was a former secretary of a British businessman, mining magnate and politician in South Africa, born in 1853?

Context paragraphs:
Robert Coryndon: Sir Robert Thorne Coryndon (2 April 1870 – 10 February 1925) was a British colonial administrator, a former secretary of Cecil Rhodes who became Governor of the colonies of Uganda (1918–1922) and Kenya (1922–1925).

Cecil Rhodes: Cecil John Rhodes PC (5 July 1853 – 26 March 1902) was a British businessman, mining magnate and politician in South Africa, who served as Prime Minister of the Cape Colony from 1890 to 1896.  An ardent believer in British imperialism, Rhodes and his British South Africa Company founded the southern African territory of Rhodesia (now Zimbabwe and Zambia), which the company named after him in 1895.  South Africa's Rhodes University is also named after him.  Rhodes set up the provisions of the Rhodes Scholarship, which is funded by his estate, and put much effort towards his vision of a Cape to Cairo Railway through British territory.

Doornfontein: Doornfontein is an inner-city suburb of Johannesburg, South Africa, located to the east of the city centre, Region 8.  The area, whose name means "thorn fountain", was originally the southern part of a farm owned by Frederick Jacobus Bezuidenhout, and was proclaimed a public diggings after the discovery of gold on the Witwatersrand in 1886.  The suburb was laid out in the late 1880s by Thomas Yeo, and became the first residential suburb of Johannesburg.  In 1897 the freehold of the suburb was bought by a company owned by the mining magnate Barney Barnato, and the district became known as "Millionaire's Row".

George Albu: Sir George Albu, 1st Baronet (26 October 1857 – 27 December 1935) was a mining magnate in the diamond and gold industries of South Africa.

Vanessa Gounden: Vanessa Gounden (born 1961) is South Africa's first female mining magnate and arguably most successful female entrepreneur, whose business interest span healthcare services, financial services and lifestyle and leisure.  She served in Nelson Mandela's ANC administration during the 1990s.  She is South Africa's first female mining magnate and one of South Africa's most successful female entrepreneurs.  Vanessa Gounden is an inspirational and driven businesswoman who has made a name for herself in notoriously difficult industries as diverse as mining to fashion.

Cecil Rhodes (disambiguation): Cecil Rhodes (1853–1902) was a British imperialist, businessman, mining magnate, and politician in South Africa.

Nathan Tinkler: Nathan Tinkler (born 1 February 1976) is a former mining magnate and businessman from the Hunter Region, New South Wales, Australia.  He started out as a mining apprentice in the Hunter Valley, in New South Wales and set up his own business at age 26.  Much of his wealth, most subsequently lost, was acquired from investments in the mining industry.

Patrice Motsepe: Patrice Tlhopane Motsepe (born 28 January 1962) is a South African mining magnate.  He is the founder and executive chairman of African Rainbow Minerals, which has interests in gold, ferrous metals, base metals, and platinum.  He also sits on several company boards including being the non-executive chairman of Harmony Gold, the 12th largest gold mining company in the world, and is the deputy chairman of Sanlam.  In 2012, Motsepe was named South Africa's richest man, topping the Sunday Times' annual Rich List with an estimated fortune of R20.07 billion ($2.4 billion).

Hazel Crane: Hazel Crane (1951 – 10 November 2003) was a prominent socialite, businesswoman and posthumous memoirist in South Africa.  She was assassinated on 10 November 2003 near her mansion home in the plush Northern Johannesburg suburb of Abbotsford, the same suburb where controversial mining magnate Brett Kebble was murdered later in 2005.

Albu baronets: The Albu Baronetcy, of Grosvenor Place in the City of Westminster, and Johannesburg in the Province of Transvaal in the Union of South Africa, is a title in the Baronetage of the United Kingdom.  It was created on 12 February 1912 for the South African mining magnate George Albu.  He was the founder of the General Mining and Finance Corporation alongside his brother Leopold Albu.  s of 2017 the title is held by the first Baronet's grandson, the third Baronet, who succeeded his father in 1963.

Supporting paragraphs: Robert Coryndon Cecil Rhodes
Answer: Sir Robert Thorne Coryndon