Jeff:

What is the basis of your belief that David Y. ROPER was a son of William ROPER and Keziah YATES?

Also, what is the basis of your belief that David Y. ROPER's middle name was "Yates"?

Are you aware of any actual evidence in support of this ascription? Does it really seem either likely or plausible that William ROPER and Keziah YATES had a child named David Y. ROPER (b 1778, d 01 Sep 1843) OUT OF WEDLOCK THREE YEARS BEFORE THEY MARRIED ON 31 AUG 1781?

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Separately, are you aware of any evidence which supports the ascription of Wiley Blount ROPER as a son of David Y. ROPER?