I have now found GD b 1861 in the 1910 USA Census, with wife Harriet b 1863 mand son George b 1885.
Harriet is Harriet Gilbert m 1884
Groom's Name: Geo. Dow Groom's Birth Date: 1860 Groom's Birthplace: Sco. Groom's Age: 23 Bride's Name: Harriet Gilbert Bride's Birth Date: 1863 Bride's Birthplace: Eng. Bride's Age: 20 Marriage Date: 15 May 1883 Marriage Place: Paterson, Passaic, New Jersey Groom's Father's Name: Groom's Mother's Name: Bride's Father's Name: Bride's Mother's Name: Groom's Race: Groom's Marital Status: Single Groom's Previous Wife's Name: Bride's Race: Bride's Marital Status: Single Bride's Previous Husband's Name: Indexing Project (Batch) Number: M02513-3 System Origin: New Jersey-EASy Source Film Number: 495699 Reference Number: Pg C-D Ln 74
Name: George Dow Titles & Terms: Residence: New York City, New York, New York Birth Date: May 1861 Birthplace: Scotland Relationship to Head of Household: Self Spouse: Harriet Dow Spouse's Titles & Terms: Spouse's Birthplace: England Father: Father's Titles & Terms: Father's Birthplace: Scotland Mother: Mother's Titles & Terms: Mother's Birthplace: Scotland Race or Color (expanded): White Head-of-household Name: George Dow Gender: Male Marital Status: Married Years Married: 16 Estimated Marriage Year: 1884 Mother How Many Children: Number Living Children: Immigration Year: 1882 Enumeration District: 0982 Page: 4 Sheet Letter: A Family Number: 74 Reference Number: 2 Film Number: 1241125 Image Number: 00013 Household Gender Age George DowM SpouseHarriet DowF ChildGeorge DowM
The couple, George & Harriet, don'y appear to have had any more children.
At present, the 1910 Census Entry is the last trace of any of te three.
I have also looked in the American War Dead site for GD 1885; but no signs, although as it apparently only covers about one-quarter of the casualties ...