Alois
The Disappearance of Josef MengeleAlois was Josef Mengele’s brother and a consequential link between the family’s South American business interests and Josef’s flight from prosecution. His documented role is not that of a public political figure but of a family insider: he visited Josef in Buenos Aires, reassured him about the family’s standing in Günzburg, and later joined the circle that advised him in Paraguay.
Family and Business Background
The Mengele family’s support for Josef was backed by substantial wealth and a flourishing business. When Alois visited Buenos Aires with his wife, the family was already investing in South America, and further relatives were expected to arrive. Their father, Karl Sr, had built a large company in Günzburg; by the time of his visit to Josef, the firm had more than six hundred employees. The family’s money also financed Josef’s carpentry works and furniture factory, among his other ventures.
Alois’s place in the family became more prominent as Karl Sr grew old and tired. During Josef’s eventual residence in Asunción, the family’s younger generation was described as holding the reins of its multinational business. This transition gave Alois a role in a family structure that had long combined commercial influence with practical support for Josef.
Reassuring Josef
When Josef worried about returning to Germany, Alois tried to calm him by emphasizing their father’s local power and popularity. He described the family firm as a small empire and Günzburg’s largest employer, arguing that the family’s prominence made it unlikely anyone would denounce the boss’s son. He also pointed to their father’s public standing and civic projects, including support for social housing, a hospital, and a swimming pool. The reassurance presented family influence as a shield against scrutiny, even as Josef remained convinced that he was in danger.
Alois’s reassurance did not erase Josef’s fear. Josef remained sleepless and suspicious, and planned to leave for the anonymity of Munich before considering further business discussions with the family. The contrast shows the limits of Alois’s counsel: he could invoke the family’s security and reputation, but he could not make Josef feel safe.
Support in Paraguay
After Josef fled Buenos Aires for Paraguay, Alois came to him in Asunción, where he joined Hans Sedlmeier and other associates in discussing what to do. The group sought advice from Hans-Ulrich Rudel, who assured them that Paraguay offered protection and that Josef need not fear being pursued there. Alois’s presence placed him among the family and political contacts helping Josef establish himself after another flight.
The visit also carried a practical purpose. While in Paraguay, Josef was entrusted with selling a fertilizer spreader that had been successful in Europe. The business assignment connected his refuge to the family enterprise, even as his anxiety and loss of confidence made him less effective socially. Alois’s documented contribution is therefore both personal and commercial: he helped sustain contact with his brother and participated in the network through which Josef’s South American life was reorganized.

