Amy, this is your cousin Jason. I have a copy of the Shelby - Baker Family Reunion Book from 1958. It reads:

"Jonathan Shelby, son of Ivan and Mary Shelby, was born in Illinois, December 9, 1837. At an early age the family moved to near St. Louis, MO. While living here his grandmother died and was burined in St. Louis. When he was nine years old, the family moved to Texas County, Missouri near the present site of Roubidoux."

Hope this helps you as well as others...

Jason