In office Dec 7, 1818 to Dec 6, 1819 Assumed: General Election
Jonathan Lyon spent 12 months, 4 days in office in Indiana, all of it at the state level.
Elections
We found no record of Jonathan Lyon running for office in Indiana. Our database only focuses on state and federal offices, so it's possible they ran at a different level, or in an office not currently in our database (note: state legislative election data is extremely limited currently).