# Chaskel Menachem Biderman (d.1942) <!-- AUTO:BEGIN — generated from GEDCOM; do not edit, overwritten on rebuild --> > 🔵 **Bernstein — Ozzy's side** · Relationship to Ozzy: **3rd cousin 3x removed** **Died** ~1942 — [[Treblinka]] **Parents** [[Jankiel Dawid Biderman (b.1866)]] · [[Estera Malka Frydman]] **Spouse** [[Ruchla (d.1942)]] **Children** [[Hendla Estera Malka Biderman (b.1917)]] · [[Chaim Yehoshua Biderman (d.1989)]] **Siblings** [[Abram Berek Biderman (b.1888)]] · [[Josef Mojsze Biderman (b.1891)]] *GEDCOM I515016 · Bernstein tree · synced 2026-07-01* <!-- AUTO:END --> ## Research *(your reasoning — preserved across every rebuild)* ## Evidence ## Open questions