Prime Minister's Office (Finland)
The Senate of Finland was founded on 18 August 1809 in the Grand Duchy of Finland when Emperor Alexander I of Russia signed a standing order on its establishment at Peterhof Palace. The Senate was initially called the Governing Council until it was renamed as the Senate in 1816. The Senate of Finland was divided into the Economic and Judicial Divisions; the Economic Division was further divided into departments, such as the Office Administrative Department (; ). On 1 October 1892, the Office Administrative Department was disbanded and the modern equivalent position of Prime Minister in the Senate, the Vice-Chairman of the Economic Division, was granted a support office in its place. The new unit was called the Office of the Economic Division (; ). Following Finnish independence in 1917, the unit was renamed as the Prime Minister's Office on 27 November 1918 with the operations and staff remaining intact.
Porvoo
After the conquest of Finland by Russian armies in 1808, Sweden had to cede Finland to Russia in 1809 (the Treaty of Fredrikshamn). The Diet of Porvoo in 1809 was a landmark in the History of Finland. The Tsar Alexander I confirmed the new Finnish constitution (which was essentially the Swedish constitution from 1772), and made Finland an autonomous Grand Duchy.