Lived in Kattowitz.

Hugo's relationship to Adolf and Ernestine is based on the following:
1. muzeumzabrze.pl states that Adolf and Ernestine had a son called Hugo;
2. Hilde Siefer describes herself as Hugo and Paula's neice in her Yad Vashem testimonials to them. Hilde's mother, Rosa Cwiklitzer, was a daughter of Adolf and Ernestine.
3. Hilde Siefer describes herself as Sofie Sonnenfeld geb. Czwiklitzer's neice in a Yad Vashem testimonial to her. Sofie is named as a daughter of Adolf and Ernestine by muzeumzabrze.pl.
4. HC, a descendant of Hugo Czwiklitzer confirms that Hilde and her brother Lothar were cousins of Hugo's daughter Erna Czwiklitzer.
5. HC, a descendant of Hugo Czwiklitzer has in his family collection a photo of Hugo's son Zygfried Czwiklitzer standing next to Adolf and Ernestine's gravestone.

Yad Vashem name search - confirms much of HC, a descendant of Hugo Czwiklitzer's information and gives Hugo's approximate date of birth in a testimonial.