What is "cumshewa"

Cumshewa, also Go'mshewah, Cummashawa, Cummashawaas, Cumchewas, Gumshewa, Hlḵ'inul was an important chief of the Haida people of Haida Gwaii on the North Coast of British Columbia, Canada. His name is believed to be of either Kwak'wala or Heiltsuk (Bella Bella) origin, meaning "rich at the mouth of the river". He is mentioned by Captain George Dixon who traded with him in 1787. In 1794 Cumshewa and his warriors massacred the crew of the American vessel Resolution.