Named in daughter Edith's death certificate.

The JRI-P record of his marriage names his parents and gives his date and place of birth.

His granddaughter says that Joseph and Caecilia lived in Trebnitz. Joseph's deportation records give his place of birth as Guttentag and Heimann's son Julius witnessed the marriage of Joseph's son Julius.

Joseph and Caecilia were deported from Breslau to Theresienstadt concentration camp on 30/08/1942 and thence to Treblinka extermination camp on 29/09/1942; they have consecutive prisoner numbers for both deportations.