'Gallius Ryeff [son of Jacob and Annali (Tanner) Ryeff], b. 28 Feb 1619, Wädenswil. He was not in the 1634 census. He may have been the Gallus Ryeff who was living at neighboring Richterswil in 1653. He was married to Margaret Stoubler.'
28 Feb 1619 is his baptism date, as indicated in an email from Richard Davis.