Genealogy / Trying to trace Lysunio family from Medinice - Now in Ukraine. [3]

I would like to try and trace family from Medinice. My mother was born there in 1926. Her name is Czeslawa Lysunio. Her mother's family came from the same area and her mother's name was Helena Obstafinska. She was born in about 1904. My mother and her familiy moved to Chodorow and lived there until they was taken by the Soviet Army as prisoners of war. My grandfather Francis Lysunio was in the Polish Army but he went missing and was never found.

I have a copy of my mother's birth certificate ( it's in Latin so it may be a baptism certificate)

Any help or pointers would be appreaciated.