William S. Heckscher
From 1918 to 1921, the family lived in the Netherlands while Heckscher's father served as the Weimar Republic's ambassador to The Hague; there, Heckscher enrolled at the Nederlandsch Lyceum. Heckscher pursued his interests in history and Flemish art by spending his off hours studying at the Dutch Royal Library, the Mauritshuis and the Kröller-Müller Museum, but was dismissed from the Lyceum in 1920 for "lack of scholarly potential". After the family returned to Hamburg, Heckscher attended the city's Kunstgewerbeschule, now the Hochschule für bildende Künste Hamburg, but failed a class in ceramics.
Emil Huschke
He studied medicine at the University of Jena, and spent most of his professional career at Jena. In 1827 he was appointed professor of anatomy and director of the anatomical institute. Huschke was politically active and took part in the foundation of the "Deutsche Burschenschaft", a student movement for German national unity. In 1867 his daughter, Agnes Huschke, married famed biologist Ernst Haeckel (1834-1919).