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Son of Lipot Aron Koch and Regina Koch Brother of Etelka Koch; Aladár Koch; Oszkar Koch; Árpád Koch; Roza Koch and 8 others; Ludwig (Lajos) (Itzik) Koch; Jenő Koch; lili koch; Noname Koch; Oszkár Koch; Arpad Moshe Koch; Lajos Itzik Koch and Rozsika Koch « less