Excerpt from the Memoir of Jean Baptiste Faribault (also here)
This article at the Mississippi Brigade wondered if Faribault was a spy:
"But Faribault and U.S. interpreter Joseph La Rocque seemed to have been appearing British but were actually risking their lives to gather information at Prairie to aid Boilvin."
"Faribault appears to have been exposed as an American sympathizer in July of 1813, when his property is burned and possessions plundered by the Winnebago."
Faribault had declined the honor of serving for the British.