- Carl Heinrich Hermann LeÃner
Death - 20 April 1984 (1 year anniversary) - Uslar, Niedersachsen, Deutschland - Arnoldus van Antwerpen
Death - 20 April 1863 (122 year anniversary) - Strijen, Zuid-Holland, Nederland - Jan Cornelis Reijne
Birth - 20 April 1840 (145 year anniversary) - Tilburg, Noord-Brabant, Nederland - Henricus Wellesen
Birth - 20 April 1834 (151 year anniversary) - Gennep-Ottersum, Limburg, Nederland - Johann Ignaz Hubert Hilgers
Birth - 20 April 1825 (160 year anniversary) - Eschweiler, Nordrhein-Westfalen, Deutschland - Hermanus Christoffel Hamerslag
Birth - 20 April 1821 (164 year anniversary) - Nijmegen, Gelderland, Nederland - Friedrich Christoph Heinrich Ahrens
Birth - 20 April 1798 (187 year anniversary) - Goslar-Frankenberg, Niedersachsen, Deutschland - Joannes van Bentum
Birth - 20 April 1797 (188 year anniversary) - Kranenburg-Zyfflich, Nordrhein-Westfalen, Deutschland - Wolterus Hoefkens
Death - 20 April 1712 (273 year anniversary) - Kevelaer-Wetten, Nordrhein-Westfalen, Deutschland
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