Charles Sumner Eastman (January 23, 1864 – August 26, 1939) was an American politician and lawyer who served as a member of the South Dakota House of Representatives.
[1] Born in Primrose, Wisconsin, Eastman was educated in the Dane County public schools and at the Northwestern Business College.
In 1888, he was admitted to the Dakota Territory bar and practiced law in what is now Hot Springs, South Dakota and was senior member of Eastman & Dudley Law Firm.
He served as a Democrat in the South Dakota House of Representatives from 1907 to 1908.
[2] His uncle was Robert M. La Follette,[1] who served as a member of the United States Senate.