Given name: Chaskiel Family name: Wajnberg

He came form the provinces, he got rich in Warsaw where he had an electrotechnical storehouse. David Fogelman, who hid with him during and after the Warsaw Uprising, describes him as 'a repulsive type of a man and a greedy miser who thinks all day how to steal as much goods as possible to have after the war'. They survived in the hideout until the liberation.