Giannis and Mike,

Thank you both for these replies. That Kristinovka connection is interesting! I will look into it further. I have some cousins descended from Esther's siblings (the ones who go by Jeruss), and they might have a clue. And yes, I assume the surname was something like Yerusalemskiy, and I've always been puzzled by this "Jirsolinsky" spelling which appears nowhere else except the two documents I mentioned. 

Thank you again,

Jay Gordon