https://www.mappingthelives.org/bio/ea0e0c3e-a103-4eff-a940-20e5bba66900
https://d-nb.info/1020561831/34
Heinrich Freier (1906 - 1944) - Genealogy (geni.com)
https://yvng.yadvashem.org/nameDetails.html?language=en&itemId=13854342&ind=2
Fate relatives: