William Gore Ouseley

Sir William Gore Ouseley
Born	26 July 1797
Died	6 March 1866 (aged 68)
Occupation	Diplomat, author & artist
Spouse(s)	Marcia Van Ness
Children	A daughter and a son who died young
Parent(s)	Sir William Ouseley and Julia née Irving

Sir William Gore Ouseley (26 July 1797 – 6 March 1866) was a British diplomat who served in various roles in Washington, D.C., Rio de Janeiro and Buenos Aires. His main achievement were negotiations concerning ownership of Britain's interests in what is now Honduras and Nicaragua.

Ouseley was born in London to the orientalist Sir William Ouseley and his wife Julia. He was attaché in Washington D.C. from 1825 to 1832, when he had his first book published. The country of Argentina was effectively created in 1826, and he was amongst a group of Britons who assisted the new country gaining an advantage for Britain, negotiating contracts for expertise such as railways.

Ouseley later served in Rio de Janeiro in 1832 as a consul where he rose to the rank of minister. Not soon after that he was posted to Buenos Aires where he remained until 1850. His book concerning the slave trade which he published in 1850 is still (2007) in print.

Ouseley was very well connected, having a Governor as a father-in-law, a sister-in-law who was also a judge in New York and another sister who had received a marriage proposal from US President James Buchanan. He had but one blot on his record, having been recalled from Rio de Janeiro, although his superior was generous enough to admit that the argument that caused the recall was in hindsight found to be in Ouseley's favour. In the UK, both his father and his uncle, Sir Gore Ouseley, were well-connected diplomats and gentleman scholars.

In October 1858 he was sent on a special mission to San José in Costa Rica as a Special Envoy on the British warship Valorous. His mission was to resolve Britain's interests in Central America, particularly the Bay Islands off Honduras, the Mosquito Coast and Greytown (both now in Nicaragua). His diplomatic activity in Costa Rica was favored by the fact that he was a relative of Sophia Joy, the British second wife of President Jose Maria Montealegre (1859-1863). In 1859, he negotiated a treaty concerning the British interests with Nicaragua and with Costa Rica which involved the President of Nicaragua personally. In early November, Ouseley required a change for his health and he announced his return to Britain before the treaty was signed. Within two weeks he had to return as his only son, William Charles Ouseley, had died at the age of 27 in Asunción, Paraguay due to an opium overdose.

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