John M. Alexander was b. 1812, Rockbridge Co. His parents were m. 30 Dec 1795, Rockbridge Co. & removed w family to Bracken Co., KY <1820. Several members of the family removed to Monroe Co., MO. A John M. is listed in Monroe Co. in the 1850 Census & Slave Schedule. He again is listed in same, Madison Twp., in 1860. This is from the index. Haven't checked the census. Let me know if you find him. Good Luck!!