What I found: 1870 census Elkton, MD, Robert Baldwin (35), Lucinda (wife 31), son Harry (2). 1880 census, New Castle, DE Robert (45), Lucinda (44), Harry (12). 1910 census, Cecil, MD Harry R Boulden (49), wife Ida (38).
There are more children in the above families, but trying to keep message brief. Couldn't find much on Andrew yet, but will keep trying.