Jacob learned the trade of machinist and joined the SAJ in 1920 . Jacob joined the SPD in 1922 and the KPD in 1925 . From 1928 he worked full time for the KPD district Wasserkante and was also a member of the district management since 1931. In April 1932 he was elected as the youngest member of the Hamburg parliament for the KPD . In mid-1933 he was arrested by the Nazis in Berlin and imprisoned in Sachsenhausen concentration camp until 1940 . After his release, he organized a communist resistance group ( Bästlein-Jacob-Abshagen-Gruppe ) in Hamburg in 1941, initially with Bernhard Bästlein and Robert Abshagen, and another in Berlin in 1943 (together with Bästlein and Anton Saefkow ). The latter was at times the operational management of the KPD in Germany . In April 1944, Adolf Reichwein contacted Saefkow and established a connection between the KPD and the conspirators of July 20, 1944 . With knowledge and in consultation with Claus Schenk Graf von Stauffenberg, there was a meeting of the communists with Reichwein and Julius Leber, as well as another meeting only with Reichwein. However, the Gestapo quickly found out about it, as there was a spy in the ranks of the Communists. The Nazi persecutors arrested everyone involved, including Jacob. The arrest took place on July 4, 1944. On September 18, 1944, Franz Jacob was executed in the Brandenburg prison .
Since December 1941 he was married to the resistance fighter Katharina Jacob , whom he already knew from his time at the KJVD.
Jacob's stepdaughter Ursel Hochmuth spent decades researching the resistance to National Socialism.
- In the honor grove of Hamburg resistance fighters at the Hamburg cemetery in Ohlsdorf there is a pillow stone for Franz Jacob (third row from left, second stone).
- A stumbling block in Hamburg's Jarresstrasse 21
- A street in Berlin-Fennpfuhl bears his name.
- In Hamburg, on June 8, 2012, stumbling blocks were laid in front of the town hall for the murdered members of the Hamburg parliament, including another for Franz Jacob.
- Ursula Puls : The Bästlein-Jacob-Abshagen Group. Berlin 1959.
- Ursel Hochmuth : resistance organization Bästlein-Jacob-Abshagen. In: Streiflichter from the Hamburg Resistance 1933–1945. Frankfurt a. M. 1969. (1980 edition ISBN 3-87682-036-7 )
- Ursel Hochmuth: Nobody and nothing is forgotten, biograms and letters from Hamburg resistance fighters 1933–1945. Hamburg 2005, ISBN 3-89965-121-9 .
- Annette Neumann, Bärbel Schindler-Saefkow: The Saefkow-Jacob-Bästlein-Organization 1942 to 1945. In: Hans Coppi , Stefan Heinz (ed.): The forgotten resistance of the workers. Trade unionists, communists, social democrats, Trotskyists, anarchists and forced laborers . Dietz, Berlin 2012, ISBN 978-3-320-02264-8 , pp. 144–157.
- Frank Müller: Members of the Citizenship. Victim of totalitarian persecution. 2nd, revised and expanded edition. Published by the citizens of the Free and Hanseatic City of Hamburg. Hamburg 1995, , pp. 47-50.
- Katharina Jacob, Children of the Resistance, Hamburg: Resistance was not born in my cradle , Gallery of Remote Arts, Hamburg, 2020, ISBN 978-3-948478-06-3 .
- Kathleen Marowsky: The Bästlein-Jacobs-Abshagen Group - An example of communist resistance in Hamburg in the “Third Reich”. In: Unter-Hamburg.de
- Biography in the Handbook of the German Communists
- Short biography of the German Resistance Memorial Center
- Biography and portrait of Franz Jacob at stolpersteine-hamburg.de
- For details cf. Annette Neumann, Bärbel Schindler-Saefkow: The Saefkow-Jacob-Bästlein-Organization 1942 to 1945. In: Hans Coppi , Stefan Heinz (ed.): The forgotten resistance of the workers. Trade unionists, communists, social democrats, Trotskyists, anarchists and forced laborers . Dietz, Berlin 2012, ISBN 978-3-320-02264-8 , pp. 144–157, here p. 154 ff.
- See ibid.
- Cushion stone for Franz Jacob (about middle of page)
- Stolperstein at Jarresstrasse 21
- Stumbling blocks for murdered MdHB final inscriptions City Hall Hamburg (PDF; 16 kB)
- recommendation for the book by Detlef Garbe , director of the Neuengamme Concentration Camp Memorial
|BRIEF DESCRIPTION||German politicians (SPD, KPD), MdHB and resistance fighters against National Socialism|
|DATE OF BIRTH||August 9, 1906|
|PLACE OF BIRTH||Hamburg|
|DATE OF DEATH||September 18, 1944|
|Place of death||Brandenburg prison , Brandenburg|