The 1860 census shows a John Peck living with Catharine Jordan, a servant, and a boy named Michael Jordan. They are still together in the 1870 census but appear to then be married. The Peck Family genealogy states that John Peck married, as his second wife, Catharine Jordan (Ancestry.com, North American Family Histories). We can infer that Catharine had a previous marriage to a man with the surname Jordan.
The 1880 census shows a Catharine Marin living in Blakely, Lackawanna County, Penn. with a husband, Patrick Marin and sone Michael Jordan and John Peck. That seems to indicate she had a son with her previous husband, John. The Peck Family genealogy, cityed in Ancentry.com's North American Family Histories, states that John had one child.