A judge; author of "Die Geschichte der Familie Nothmann".

Notes on Friedrich and Gertrud's marriage certificate refer to the births of sons in 1926 and 1932, both in Berlin, Charlottenburg.

Friedrich was held in Buchenwald concentraion camp until 16/12/1938. Following emigration to the Netherlands on 21/01/1939 Friedrich, Gertrud and their sons were held in Westerbork transit camp, deported to Theresienstadt concentration camp on 04/09/1944 and finally to Auschwitz concentration camp on 16/10/1944; Friedrich and the boys were murdered on arrival on Friedrich's 57th birthday.

Translation of the entry for his Stolperstein (Berlin-Schoeneberg, Elssholzstraße 30–33) in de.wikipedia.org:
He studied law and in 1914 passed the Second State Examination. From 1914 to 1918 he fought at the front. After the war he married Gertrud Bernhard; the sons were born in 1920, 1925 and 1932. The family lived in Berlin-Lichterfelde at Moltkestrasse 10. From 1921 he was a district judge at the District Court I in Berlin. He was a criminal judge and from 1929 adjudicator; in 1933 he worked in the 2nd Criminal Senate. From April 1933 he was forcibly placed on leave and from July 1933 he was subject to a professional ban. After Kristallnacht he was deported to the Buchenwald concentration camp, but was released on 16 December 1938. In January 1939, the family emigrated to The Hague. After the invasion of the Wehrmacht, the entire family was arrested and taken to the Westerbork transit camp. From there, Friedrich Nothmann and his family were deported to Theresienstadt on 4 September 1944 with the penultimate transport and then on 16 October 1944 to Auschwitz, where they were probably murdered on 18 October 1944. His wife Gertrud and two of his sons also died in Auschwitz, the fate of the third son is unknown.

German Federal Archive records give addresses for Fritz in Berlin and Utrecht. The address in Berlin is undated, and is shared with only one other listed person, Erna Behrendt geb. Dorf born in Berlin in 1920; she is not a known relation of the family. Fritz shared the address in Utrecht, Da Costalaan 30, with his wife Gertrud and son (Georg) Albrecht.