I know the Pluta family from Nanticoke, PA! They lived by me. I was born across the street from Mrs. Pluta. Can't remember her first name. She lived on E. Grand St. Her son was Tony and Daughter was Dolores Pluta Mandycz. I was close friends with Dianne Mandycz, Dolores' daughter. Sadly today is Dianne's 60th birthday and she died on her 50th birthday. Could this be the Pluta family you are looking for?
Mrs. Pluta might of died in the 70's or 80's don't know. Her son and daughter are also dead.