Father: Pucksinwah (or Pucksesheniwau)
Mother: Mary Issc (Methotsa, or Methoattaske)
Tecumapease was the sister of the Indian Chief Tecumpsah. She was an Indian princess, however her mother was not an Indian, but an Indian captive.
See also http://www.herrickhomepage.com/IndianDescent.pdf
and http://www.herrickhomepage.com/tecumseh.pdf