"Sunya" could actually be Sanya which is a diminutive form of Alexander. Sunya Feingersh and Miriam Reichman were second cousins. That apparently means that Miriam Reichman's grandfather Chaim Itzik Feingersh was a brother to Sunya Feingersh's grandfather. I know of only one brother of Chaim Itzik Feingersh (although there probably were more). His name was Yisruel Feingersh. Yisruel Feingersh had 4 sons that I know about - Herschel, Aron, Daniel and Reuven. Sunya could have been the son of one of the sons of Yisruel Feingersh.
