My branch of the Alexanders indicates that John M. Alexander lived in Ky (Cumberland Cty.) and was b. about 1812. He married Cordelia Gaines (also of Ky.) in 1841 in Monroe Cty., Missouri. They had many children, one of which, Samuel L. (b. 1860) married Susie Boren in Shelby Cty. Mo., in 1884.
However, I'm stuck with John M. at the 1830 Ky. census. It appears that his parents were both from Virginia, but no other information.
If anyone has any data or suggestions, I'd really appreciate it...family "lore" was that my "line" emigrated from Cty. Cork, Ireland.