I had no info, but your question triggered me to do some ressearch. I am setting up a profile for him, Johan Christiaan Eleonor Bartelds.
Born 1861. Teacher, 1890-1905 in the Dutch colony of the East Indies (nowadays Indonesia). Married late: 1907, and had no occupation at that time, possibly retired.
Contributed to Volumes 7 and 8 of the NNBW, the Dutch counterpart of the British Dictionary of National Biography (DNB).
Passed away February 1928. He was admitted as a member of the Historisch Genootschap per January 1, 1928.
By the way: Had you tagged the question just dutch_roots (instead of dutch_roots_project), you would have been answered more speedy, as that is the tag all members of the Dutch Roots Project watch.