Hans Mayer was a son of Oskar Mayer and Rosa (Rosette) Kann, and he had also another sister Hedwig, who was two years older.
City Archive of Amsterdam, archive cards of Oskar Mayer and Hedwig Maijer.
Biography
Hans Mayer was a son of Oskar Mayer and Rosa (Rosette) Kann, and he had also another sister Hedwig, who was two years older.
City Archive of Amsterdam, archive cards of Oskar Mayer and Hedwig Maijer.