Alan, you and I are definitely related! Like you, my 4g grandfather was Zachariah Belcher and my lineage is through his son, Thomas. My understanding is that your Charles did work with the Belcher brothers at their rule manufacturing business in Irvington, NJ, although in what capacity I can't say.
I'm very interested in your lineage. I wasn't aware that Zach had a sister, Jane. Do you have any information about the line prior to Zach and his parents?
Please contact me through Ancestry and/or email@example.com
. I will invite you to see my tree.
Thomas H Belcher (Tom)