'Joseph Reiff [son of Hans Heinrich and Anna (Hitz) Reiff], b. 8 Sep 1657, Wädenswil. He went to Ibersheim, Pfalz with his father in 1673. ... [H]e may have been the father of the three Reiff brothers who arrived in Pennsylvania in 1717.'
8 Sep 1657 is his baptism date, as indicated in an email from Richard Davis.