In the 1880 census there are two boys William aged 12 and Herman aged 2, who apparently didn't survive as they are not mentioned in the family letters I have from the 1890s on. The boy Walter aged 5 is mentioned in the letters but I don't know whether he had any descendants. A fourth son, Robert Wood Pinder, was born after 1880 and had 2 children, Robert Wood Pinder II (who had no children) and Mary Agnes, who is still living. This family corresponded with my greatgrandfather and we have numerous letters and photos.
That is about all the information I have. I'd be interested to hear about your connection to the family.