(1) William Colvin, (III) grandson of Dr. William Colvin of Scotland did not marry his wife, Mary Ann Grable, until ca. 1789.(2) His only daughter named Mary was b. 1802. (3) The most obvious fact that Margaret Moore (nee Colvin) she is not his daughter is her b. date: 1747. William Colvin (III) was not b. until 1767 -- twenty years after her birth.
