I to am researching this line of Coburns. I descend from William and Jane Pollock Coburn through their son William. I am trying to locate more on the family for my father. I have found War of 1812 records that list a William Coburn once as a private under Captian Theophilus Simonton and once as a Corpal under Captain Robert Gilmore. From what I have been able to locate as of now William had three children (known to me) William born 6 June 1806 in Warren County Ohio who married Mary Smith, John born 5 July 1804 in Warren County, Ohio and Jane born 1 November 1808 in Warren County, Ohio. If this a possible match to your lines, if you could send me in the right direction to locate more on the family I would greatly appreciate it.