Hi Marilyn, We definitely have our work cut out for us.I have no documentation that Jacob husband of Anna Maria Meckley was s/o Johann Peter.I think this "source" is the Stambaugh Genealogy book.His birthdate of 1775 prob comes from the census of 1850 (ae 75 then) That may or may not be accurate.We should prob attempt to contact the cemetery where he is buried for a more precise birthdate.Re: your great Aunt's records, Johann Peter was b. 6/14/1752, son of Nicholas & Anna Barbara.The Jacob b. 12/16/1749 was his brother.The Jacob b. 1749 had a son Jacob b. 1776 but cannot be "our" Jacob as he d. 1842 in Paradise Twp. York Co.