I did spend considerable time a few years ago trying to solve the puzzle of where Daniel Yant b. 1802 PA fits into the Yant families and was unable to find an answer. My research determined that Valentine and Louisa had at least 5 sons namely Valentine b. 1774, John b. 1782, Jacob b. 1782, Frederick b. 1790 and Abraham b. 1791. I researched the families of all of these 5 sons, most of which migrated to Ohio before 1820 except for Frederick and Abraham, but none had a son Daniel b. 1802.
I would be pleased to send you my Genealogy Report on the Yants if you would provide me with your e-mail address. My e-mail address is email@example.com.