Bacia Laja Birenbaum nee Perelstein was born in Kozienice, Poland, 1889. She was a housewife and married to Moszek. During the war she was in Belgium. Deported with Transport XIV from Caserne Dossin (Malines-Mechelen),Camp,Belgium to Auschwitz Birkenau,Extermination Camp,Poland on 24/10/1942. Bacia Laja was murdered in the Shoah.