There are several James Dows in my family who lived in NY (Poughkeepsie, Dutchess Co) and in NJ. Only one I know of may be connected, James Dow, Jr., son of James Dow and Susannah Van Keuren, b. 26 Sep 1855 and listed in Poughkeepsie City Directories through 1896. I have no info on spouses, or where/when he died. There are two other lines of the family (descended from three brothers) which I know little about at present, except that they were in NJ in the early 19th century. There are many other Dow branches, however, to which I'm not related, and have no information. The Book of Dow is a good place to start, despite its many errors.