Sir Frederick William Holder was an Australian politician. He was Premier of South Australia from June to October 1892 and again from 1899 to 1901. He was a prominent member of the inaugural Parliament of Australia following Federation in 1901, and was the first Speaker of the Australian House of Representatives.

John Greeley Jenkins was an American-Australian politician. He was Premier of South Australia from 1901 to 1905. He had previously served as Minister for Education and the Northern Territory and Commissioner for Public Works under Thomas Playford II, Commissioner of Public Works under Charles Kingston and Chief Secretary under Frederick Holder. He was subsequently Agent-General for South Australia from 1905 to 1908.