>> guest: plaszow is the concentration camp. its concentration camp that was run by my grandfather and my grandmother and my grandfather, you know, stayed there for a period of, i think, yes, several years together. >> c-span: go back to the chart. right below that is a woman whose name is monika hartwig. who is she? >> guest: monika hartwig is my biological mother. she married and this her married - the name that she took on when she was married, but she's also monika - she was born as monika goeth, and she's the daughter of ruth irene and amon. >> c-span: did you know her? >> guest: yes, she's my biological mother and i - she gave me up for adoption, but we were in contact for - yes, for were in contact for - yes, for the first years of my life. she gave me to an orphanage when i was four weeks old, but we stayed in contact. and only when i was seven years old, we lost contact because i was adopted by a white german family and thereafter haven't seen her for many, many years. but until seven years, we stayed in contact. >> c-s