A Few Early Tensions Among The Family
During the 1930s, Adi Dassler had started a course at the local Footwear Technical College and developed a friendship with one of his instructors, Franz Martz. He visited Franz’s house and fell in love with his 15-year-old daughter, Käthe.

Käthe Martz and Adi Dassler. Source: Sutori.com
The pair got married in 1934, and Rudolf was also married to a woman named Friedl. Allegedly, Käthe’s arrival causes some issues among the Dasslers. She often spoke her mind and would have arguments with Rudolf, Friedl, and the Dassler parents. Rudolf would later say that this was the turning point in his relationship with Adi.