číčməhán (also Cheech-Ma-Ham, Chits-Ma-Han or Chetzemoka) was born in about 1808 at KaTai, to Quah-Tum-A-Low and Lach-Ka-Nam, chief of the S'Klallam.
The settlers found his name difficult to pronounce, so they changed it to Chetzemoka, and he was given the "royal" nickname Duke of York.
The Superintendent of Indian Affairs recognized Cheech-Ma-Ham as chief of the S'Klallam in 1854, holding him responsible for the "good behavior" of his people.
During these wars, a number of S'Klallam held a secret meeting to decide whether or not to kill the whites in Port Townsend.
A bronze plaque was eventually placed on the rock he signaled from, and a park in Port Townsend bears the name Chetzemoka.