From the History of Missouri: Christopher C. Dennis, senior member of the firm of Dennis & Schulte, real estate and exchange agents of Fredericktown, Mo., was born in Perry County, Mo., in 1854, and is the son of Jonathan and Sarah Ann (Gross) Dennis. The father was a native of East Tennessee, born in 1829 and of Irish descent. At the age of twenty-two he and his mother, Ruth (Pettit) Dennis, immigrated to Bollinger Co., Mo., and it was here that Jonathan grew up and was married. He afterward moved to Perry County, bought a farm of 150 acres, fifteen miles west of Perryville, where he located and where he now resides. (This is an older book)
His wife was born in Missouri in 1838 and died in 1872. Six children were born to this union; Christopher C. being the eldest.
Hope this is of some help. There is a little more about Christopher. If you want me to finish, let me know. Marcy