Alexander Hirschfeld, born June 5, 1887 in Tolkemit, Elbing County in East Prussia was married to Lydia Hirschfeld, née Petzall, born July 21, 1891 in Bischofsburg in East Prussia. The couple had a daughter, Anneliese, born around 1920. Alexander Hirschfeld was  co-owner of the textile store Petzall at Markt 31/35 in Bischofsburg and lived in Perbandtstraße for rent. Lydia Hirschfeld was deported from her apartment in Berlin-Charlottenburg, Sybelstr. 60, on the "18th Osttransport" to Riga on August 15, 1942. She was murdered on 13.11.1942 in Riga.

The Israelite synagogue community Adass Yisroel, Berlin was founded in 1869. The reason was the increasing social and ideological assimilation of large parts of the Jewish community. This community, for all its open-mindedness, attached great importance to a law-abiding life and the preservation of Jewish tradition. The splendid design of the new synagogue in Oranienburger Street was a point of contention, and when an organ was also built in, many believers felt that this was a break with Jewish tradition. This led to the secession and the founding of Adass Yisroel.

Ignaz Kronberger was born in Lackenbach on July 1, 1816. He died on November 26, 1908, his parents were Marcus Mordechai Kronberger and Leny Kronberger. He was married to Amelie Kronberger. The couple had 9 children. Ignaz Kronberger made his living by trading in knoppers. He was a knopper trader. On May 17, 1877, he donated a silver knob to the newly built Israel. Temple he donated a silver eternal lamp.