My G-grandfather's name was Yosef Rachmil WASERSZTEYN. I don't have place/date of birth. I was told that he died in Warsaw around 1915. He was married to Ita Pajczer. I know of two children: both born in Mszczonów: Gedalia (Godul) in 1869 and Szmul in 1887.
I found a Josef Rachmel WASERSZTEYN born in Opoczno in 1841. Could this my g-grandfather? Any way to find his parents, other children, siblings?