Hello. I am trying to trace back my mom's side of the family. her maiden name is Kozlowski.My Grandpa's name was Zigmund Walter Kozlowski.I know he came from Poland to New Jersey when he was young.I'm not sure of the dates of when they came over.All of his sisters, except my great aunt Lottie, have already passed.Please someone help me b/c I have no idea what I'm doing.
He was born around 1916/1917. I am trying to find which city in Poland he came from.