Guillaume-Nicolas Paquet was born on 20th January, 1775 in Saint-Nicolas d'Aliermont. Isaac Sauteur was born on 20th January, 1793 in Saint-Nicolas d'Aliermont. Charles-Eugène Dumouchel was born on 20th January, 1815 in Saint-Nicolas d'Aliermont. Bernard Agnan (Agnon) Callier was born on 20th January, 1821 in Aubigny, Cher. Pierre-Albert Dehame was born on 20th January, 1843 in Saint-Nicolas d'Aliermont. Jacques-Valentin Dumouchel was born on 20th January, 1848 in Saint-Nicolas d'Aliermont. Gaston-Émile Dumouchel was born on 20th January, 1850 in Saint-Nicolas d'Aliermont. Jules Calame was born on 20th January, 1852 in La Chaux-de-Fonds.
Jacob Fabri died on 20th January, 1713 in Geneva. Isaac Daniel Piguet died on 20th January, 1841. Edmond-Bénoni Gauray died on 20th January, 1863 in Saint-Nicolas d'Aliermont. Julien Huguenin died on 20th January, 1863 in La Chaux-de-Fonds. Flore Legrand died on 20th January, 1868 in Saint-Nicolas d'Aliermont. Denis Diette died on 20th January, 1881 in Saint-Maur-des-Fossés. Suzanne-Albertine Roussel died on 20th January, 1966 in Saint-Nicolas d'Aliermont. Otto Thielemann died on 20th January, 1980.