On January 31, 1893 Frederick Gruen stopped educating at the German Clockmaker School in Glashuette. On January 31, 1936 the Julius Epple K.G. company took steps to protect its Trade Mark name Epple.
Guillaume-Philippe Papin was born on 31st January, 1780 in Saint-Nicolas d'Aliermont. Jean Fouré was born on 31st January, 1793 in Saint-Nicolas d'Aliermont. Pierre-Dominique-Eugène Delépine was born on 31st January, 1823 in Saint-Nicolas d'Aliermont. Georges Agassiz was born on 31st January, 1846 in Saint-Imier. Victorine-Augustine-Aurélie Lostelet was born on 31st January, 1846 in Ancourt. Amable-Adèle Delahaye was born on 31st January, 1871 in Saint-Nicolas d'Aliermont. Daniel-Charles Barrot was born on 31st January, 1872 in Saint-Nicolas d'Aliermont. Albert-Alfred Prestot was born on 31st January, 1879 in Saint-Nicolas d'Aliermont. Henri Daniel Piguet was born on 31st January, 1904 in Le Sentier.
Jost Bürgi died on 31st January, 1632 in Kassel. Michael Bommel died on 31st January, 1648. Laurent Mégevand died on 31st January, 1814. Henri-Alexandre-Élie Legrand died on 31st January, 1890 in Saint-Nicolas d'Aliermont. Karl Haas died on 31st January, 1900. Ernest-Edouard Dehame died on 31st January, 1965 in Oissel near Rouen.