English source-aligned edition
Josef Niedermayer
Josef Niedermayer served as head of the camp prison and block leader of Block 20 at Mauthausen. The profile reconstructs the person’s function in Mauthausen through documented office, decisions, supervision or operational conduct. It does not assign every crime committed by an institution or region to one individual.
Confirmed findings
- Josef Niedermayer was born in Salzburg on 11 April 1920 and served at Mauthausen from April 1942. (Source: cited institutional or judicial record)
- He headed the camp prison and Block 20; he admitted participating on orders in about 400 executions, then led the pursuit after the mass escape and took part in killings. (Source: cited institutional or judicial record)
- In the main Mauthausen trial he was sentenced to death on 13 May 1946 and executed on 28 May 1947. (Source: cited institutional or judicial record)
Place in the chain of responsibility
The profile separates his admission and the acts described by the sources from the wider responsibility of the Mauthausen apparatus; the figure of about 400 is not treated as a complete victim total. (Source: cited institutional or judicial record)
Key events and mechanisms
- In March 1943 he took charge of the Mauthausen camp prison, and from November 1944 he also led Block 20. (Source: cited institutional or judicial record)
- On 13 May 1946 a US military court sentenced him to death. (Source: cited institutional or judicial record)
The circle records authority, function and agency. Several profiles may describe different parts of the same persecution chain, so profile-level totals must not be added together.
Postwar accountability
A US military court sentenced him to death on 13 May 1946; he was executed at Landsberg on 28 May 1947. (Source: cited institutional or judicial record)
Limits of the evidence
The account does not total all victims of Block 20 or the pursuit after the escape and does not convert collective responsibility into unsupported individual acts. No portrait with clearly documented publication rights was found. (Source: cited institutional or judicial record)
Sources
The source set combines institutional, archival, trial or scholarly material from at least two independent publishers.