Erwin Planck was a German politician, and a resistance fighter against the Nazi regime. Wikipedia
Born: March 12, 1893, Charlottenburg, Berlin, Germany
Died: January 23, 1945 (age 51 years), Berlin, Germany
Siblings: Hermann Planck, Emma Planck, Grete Planck, and more
Uncles: Adalbert Planck and Otto Planck
Parents: Max Planck and Marie Merck
Grandparents: J. w. Planck and Emma Patzig
Great-grandparents: Wilhelm Planck and Dorothea Planck