Cornplanter Refining Company was a small, Warren, Pennsylvania based oil company. The firm not only refined oil but prospected for and produced crude oil in the northwest Pennsylvania oil patch.
Chief Cornplanter, portrait by Frederick Bartoli, 1796
Chief Cornplanter was a Seneca Indian chief during the early history of the United States, including the periods of the French and Indian War and the Revolutionary War. The US Government "gave" Cornplanter a grant of 1500 acres along the Allegheny River in Pennsylvania near the boundary with the State of New York. I presume what would become part of the Pennsylvania oil patch included the territory of this original grant.