Sir John Blackler Colton, was an Australian politician, Premier of South Australia and philanthropist. His middle name, Blackler, was used only rarely, as on the birth certificate of his first son.

Sir William Cleaver Francis Robinson was an Irish colonial administrator and musical composer, who wrote several well-known songs. He was born in County Westmeath, Ireland, and was educated at home and at the Royal Naval School. He joined the Colonial Office service in 1858 and became the president of Montserrat in 1862.