Dear Lisa, I am so happy to get your post! I am researching the entire Plastridge family as at this point they all seem to be related. This Herkimer branch is a real puzzle to me. I have documented almost all the family from 1751 to the midd 1900's and I have never heard of any of them in Herkimer Co. I would love any research you would have on your ggg grandfather's sister and her descendents. Do you have any census records on her and Isaac? Really any info at all, any tidbit would be greatly appreciated! I have not done any research in NY up to this point. I see that Isaac died in 1914. How would I get a death cert for him? Are there spaces for his parent's names this early? Thanks so much for your response, I look forward to hearing from you. Kathy Karn