What is the basis for your belief that the David ROPER (b 08 Jun 1792 - SC, d 17 Apr 1878 - Lawrence, MO) who settled in Greene County, Missouri, was a minister? Can you identify the denomination? Do you have some additional genealogical details or primary references to share. I have a great deal of information about the ROPER family.
See also my post:
"David ROPER (b abt 1791 - SC, d aft 1870), of Greene County, MO" (10 Jan 2013 3:28PM)http://boards.ancestry.com/surnames.roper/1758/mb.ashx