Genealogy / Niezabitowski, Kasprzyk, Wiatrowski, Researching genealogy of parents [8]

Researching genealogy of parents and possible relatives:
Maria Niezabitowska born 08-15-19 in Horochowie, Luckie to Stanislaw and Franciszka(Kasprzyk) Niezabitowski. She had a sister Teresa who died in 1969. I believe she had a brother. She was in a concentration camp - not sure where. Was in Osnabruck displaced persons camp where she met and married my father, Jozef Wiatrowski who was born on 09-05-13 in Modla Ksiezej, Konin to Marcin and Antonia (Krzyzak) Wiatrowski. They had a daughter Regina while there. They were moved to Braunsweig and had another daughter, Adela. In October of 1950 they sailed on the USNS General RM Blatchford to New York. They landed here November 1, 1950. I appreciate any information.