- Georg Wilhelm August Mertens
Birth - 21 December 1845 (8 year anniversary) - Eldingen-Wohlenrode, Niedersachsen, Deutschland - Jan Kouws
Birth - 21 December 1841 (12 year anniversary) - Groesbeek, Gelderland, Nederland - Maria van Ingen
- Corneille Jean Kraijenhoff
Birth - 21 December 1788 (65 year anniversary) - Amsterdam, Noord-Holland, Nederland - Heinrich Cristian Fieker
Death - 21 December 1780 (73 year anniversary) - Stöckey, Thüringen, Deutschland - Anna Maria Vogt
Birth - 21 December 1730 (123 year anniversary) - Kamp-Bornhofen-Kamp, Rheinland-Pfalz, Deutschland
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