GREAT MORTAR, Yah-Yah Tustenugegee, Yahatatastenake, or Otis Micco, Creek chief, of whose early life nothing is known. He was born in Okchaiyi, belonged to the Bear clan, and became a prominent chief of his native town. He did his trading at Fort Toulouse, and during the French and Indian war was in the French interest. Governor Ellis of Georgia often sent messages to him to come and see him, as he wished to cultivate a good understanding with him and convert him to the English interest.
Great Mortar, Sachem in alliance with the Notoweega Confederacy.
The Invention of the Creek Nation, 1670-1763 By Steven C. Hahn