Jean-Jacques Vaucher was born on 13th May, 1705 in Fleurier. Jean François Barthet was born on 13th May, 1754 in Les Grangettes. Etienne Stalin was born on 13th May, 1776 in Saint-Nicolas d'Aliermont. Augustin Michel Adam Henry-Lepaute was born on 13th May, 1800 in Paris. Konstantin Blessing was born on 13th May, 1808. Laure Anna Huguenin (Bergenat) was born on 13th May, 1843 in La Chaux-du-Milieu. Georg Heinrich Moser was born on 13th May, 1844. Estelle Huguenin (Bergenat) was born on 13th May, 1847 in La Chaux-du-Milieu. Albert-Pascal Sénéchal was born on 13th May, 1865 in Saint-Nicolas d'Aliermont.
Auguste Huguenin died on 13th May, 1873 in Le Locle. Estelle-Rosa Boé died on 13th May, 1878 in Saint-Nicolas d'Aliermont. Eugène-Isidore Denis died on 13th May, 1896 in Saint-Nicolas d'Aliermont. César Huguenin-Dumittan died on 13th May, 1910 in Cortaillod. Eugène François LeCoultre died on 13th May, 1915 in Le Brassus. Helmut Förster died on 13th May, 1940.