John Abeel III known as Gaiänt'wakê or Kaiiontwa'kon in the Seneca language and thus generally known as Cornplanter, was a Dutch-Seneca chief warrior and diplomat of the Seneca people. As a war chief, Cornplanter fought in the American Revolutionary War on the side of the British. After the war Cornplanter led negotiations with the United States and was a signatory of the Treaty of Fort Stanwix (1784), the Treaty of Canandaigua (1794), and other treaties. He helped ensure Seneca neutrality during the Northwest Indian War.

The Seneca are a group of Indigenous Iroquoian-speaking people who historically lived south of Lake Ontario, one of the five Great Lakes in North America. Their nation was the farthest to the west within the Six Nations or Iroquois League (Haudenosaunee) in New York before the American Revolution. For this reason, they are called “The Keepers of the Western Door.”