Conversation so far:
What happened in William Henry Dietz's personal life?
Dietz divorced De Cora in November 1918, charging her with abandonment. It is not clear how much she knew about his identity.
What happened after people got to know about William Henry Dietz's identity?
Dietz's heritage was first contested in 1916 after former neighbors who settled on the Pacific Coast heard he was posing as an Indian.
Was William Henry Dietz punished or charged for posing as an Indian?
Dietz was tried in Spokane, Washington in June 1919.

Question: What was his real heritage?
Self-contained rewrite: What was William Henry Dietz's real heritage?