On 30 June 1820 Major Frederick Goulburn was commissioned as Colonial Secretary and Registrar of the Records of New South Wales. On 1 January 1821, Frederick Goulburn was officially sworn in and assumed his duties as Colonial Secretary.
The Colonial Secretary’s Office kept the Registers of Letters, and prepared the financial and statistical Returns of the Colony, which were sent annually to the Secretary of State. The offices of Secretary to the Governor and Colonial Secretary were not separated until May 1824 when Major Ovens was officially appointed Governor Brisbane's Private Secretary.
Another aspect of the Colonial Secretary’s Duties was as a legislator. The Secretary was an ex officio member of the Legislative Council, which first sat in August 1824. The warrant establishing the Council listed in order of precedence the Governor, Lieutenant Governor, Chief Justice, Colonial Secretary, Principal Surgeon, and Surveyor General.
The most important function of the Colonial Secretary’s office was that it acted as the channel of communications between the Governor, other government offices, and private settlers.