August Liebmann Mayer had studied art history and was curator of the Alte Pinakothek in Munich from 1912, becoming chief curator in 1920. He married in the same year and his daughter Angelika was born in 1930. August Liebmann Mayer also worked as a private lecturer and became an associate professor at the Munich university LMU. In 1931, some Bavarian colleagues initiated an anti-Semitic smear campaign against him. Although the accusations were completely unfounded, Prof. Dr August Liebmann Mayer resigned from all his posts. Shortly after the Nazis came to power, he was arrested. After his release, August Liebmann Mayer was forced to sell his art objects and property. In 1935, he emigrated with his family, first to Paris, later moving to Toulouse and finally to Nice. After his wife died, he was able to help his daughter Angelika go into hiding. She was living in hiding when he was arrested in Monte Carlo in 1944. The SS deported Prof. Dr August Liebmann Mayer from the Drancy camp to Auschwitz, where he was murdered. His daughter Angelika survived the Shoah.
A commemorative event for Prof. Dr August Liebmann Mayer took place on 28 October 2021. Afterwards, the Memorial Sign for August Liebmann Mayer was handed over at his former place of residence at Martiusstrasse 8.