His date and place of death is noted on his marriage certificate. His death was reported by the Jewish undertaker Georg Redlich, who also reported the deaths of Hedwig Birnbaum geb. Kalisky and Georg Moritz Birnbaum, born in Sagan on 04/01/1882, son of Eugen Birnbaum and Selma Birnbaum geb. Wiener. The relationship (if any) between these two Birnbaum families and Fritz's second wife Margarete geb. Birnbaum is not yet known.