who was meir katzs and what happene to him?

Mr. Katsz had been the gardener at Buna. His son had been taken during the first selection and now he was losing his sanity. When Eliezer was being strangled on the train, Mr. Wiesel called on Meir Katz to help them. Mr. Katsz didn't make it Buchenwald. He died before they got there.