Character Creation Guidelines
Right now, there are none. The GM creates all the characters.
Character Background and Knowledge
Your character is friends with the Sherif, and with the other characters. The sheriff calls you in when needs some investigation done.
Notes to Players
Remember: at this time, the Sheriff was not a policeman, he was the local representive of the King. It was a political appointee who’s job was to make sure the Shire (county) ran smoothly and the King got his taxes. Keeping law and order was a part of the job, but actual policing was an unfortunate requirement of being in control. And investigation of crime got pretty low priority.
Now this Sheriff is an “out of the box” thinker. So he rounded up a bunch of his friends an acquaintances to investigate the rare crime that actually needs investigation. And that bunch of people is you.