Kowalski's Co-Owner Tragically Died In Plane AccidentJim Kowalski died Thursday in a plane accident while fishing in Canada, according to family member Deb Kowalski. Deb Kowalski said Jim suffered a head injury in the incident, and an autopsy is being performed. She said he was with a friend on the trip. Jim Kowalski, 67, founded Kowalski's Markets back in 1986 in White Bear Lake.