Kesar Ordin
Kesar Filippovich Ordin was a Russian statesman, amateur historian, and author.
He was a graduate in mathematics of St. [Petersburg University] and author of a number of articles on Finland, opposing Finnish separatism.
Ordin is perhaps most known for his research in the history of Finland, in particular, for his work in which he contested the claims published by Finnish Leo Mechelin about the 1809 Diet of Porvoo.