Sorry, I just today found this message. William Davidson Quinton wad my husband's 4th great grandfather. I also think that his mother Jane's maiden name might have been Davidson but have been unable to document that. Where did you find that William Sr. came over from Ireland at age 33? William Sr. Served in the Revolutionary War. Military records show him born on 1850 in Maryland. His will was made on the 14th of Aug 1818 and was recorded the 28 Sept1818 so he must have died between those dates.