So, both the WikiTree profile & the DAR records show he was born in Scotland in 1716, but I've read that many Ainsworths came from England. I have the book Genealogy of the Ainsworth Families in America by Francis Jewett Parker & it says most were descended from Edward Ainsworth 1652-1741 but it seems they aren't the PA Ainsworths. On p. 4, "About 1725, there was a family of Ainsworths at Hanover, Penn, of which a few details will be given but concerning whose present representatives practically nothing has been ascertained." Would you mind pointing me toward the emigration record you've found? Everything I've seen says Hanover, PA. (?) Maybe that's where he ended up after Chester. If he came in 1726, I'd guess he was about 10 & hopefully with parents. ?