[1] The office was similar to colonial secretaries found elsewhere in the British Empire.
Along with the chief justice, the office was one of the first four created by Governor William Hobson when he arrived in New Zealand in January 1840.
The Colonial Secretary's Office handled the creation of New Zealand's public service, and became the modern Department of Internal Affairs in 1907.
Constitutionally, the colonial secretary was considered the deputy of the governor, until the granting of responsible government.
Henry Sewell, who is considered by some as the first premier (or prime minister), held the position for his short tenure as head of the government in 1856.