Given name: Izaak Family name: Unknown

Heniek's cousin, he lived in a room at Franciszkanska Street No. 20, and was Halina Aszkenaza's neighbour. Before the January Action (II) he came from the 'Aryan side' to tell his family and friends what was really going on in labour camps. He managed to escape from Majdanek. Then he escaped from the ghetto during the Second Action. The third time he escaped was when he was caught in a flat on the 'Aryan side'. He managed to survive the war.

He was a keen stamp collector, in exchange for a collection of worthy stamps he managed to buy from the labour camp commander, who also was a stamp collector, some rights. He had an 'Aryan look'.