Simon Willard was born on 3rd April, 1753 in Grafton, Massachusetts. Nicolas-Pascal Lefebvre was born on 3rd April, 1779 in Grèges. Jacques Ancel was born on 3rd April, 1793 in Les Grandes-Ventes. Jacques-Nicolas Dumouchel was born on 3rd April, 1796 in Saint-Nicolas d'Aliermont. Marie-Sophie-Clarisse Houalet was born on 3rd April, 1828 in Wanchy-Capral, Seine-Maritime. Augustine-Julia Douillon was born on 3rd April, 1836 in Saint-Nicolas d'Aliermont. Charles-Eugène Jacques was born on 3rd April, 1851 in Saint-Nicolas d'Aliermont. Marie-Eugènie Doré was born on 3rd April, 1863 in Saint-Nicolas d'Aliermont. Frédéric-Auguste Marti was born on 3rd April, 1870 in Montbéliard.
Johann Georg Adam Andreas died on 3rd April, 1741. Raymond-Jean-Baptiste Le Noir died on 3rd April, 1780. Philippe Samuel Meylan died on 3rd April, 1845 in Geneva. Henri-Louis Huguenin died on 3rd April, 1853 in Le Locle. Fritz Emile Ducommun died on 3rd April, 1878 in Les Ponts-de-Martel. Julia-Mathilde Cannevelle died on 3rd April, 1898 in Saint-Nicolas d'Aliermont. Ernest Francillon-Grosjean died on 3rd April, 1900 in Saint Imier.