yup, the mother of Margaret Elizabeth Jackson Byrd and her brother William A. Jackson was Margaret Elizabeth Stalcup Jackson (buried in New Concord, Calloway Co. KY with her husband Alexander Dameron Jackson).
I have previously noticed the Peter Stalcup in Clardy's you mentioned, but have not yet been able to confirm his relationship to Margaret E. Byrd and her brother Wm. A. Jackson (also in Clardy's) - can this Peter Stalcup be a cousin of theirs (nephew of their mother).....?????
Do you have any info re where said Peter Stalcup was living in Missouri in 1860? Was it anywhere in proximity to Iron and/or Wayne counties perchance....????
thanks once again,
Ken