Sir Spenser Buckingham St John (22 December 1825–3 January 1910)

Rajah James Brooke's private secretary from 1848 and British Consul in Brunei from 1856. In 1863 he became British chargé d'affaires in Haiti and in 1871 took up the same post in the Dominican Republic. He was promoted to Minister in Haiti late in 1872, and was chargé d'affaires in Lima and Minister in Peru from 1874 to 1883.