- August Ludwig Johannes Heinrich Eckermann
Death - 23 April 1946 (19 year anniversary) - Rostock, Mecklenburg, Germany - Gustav Meyer
- Charles H. Ludlow
- Friedrich Wilhelm Zimmerling
- Christian Julius Sonnabend
- Johann Carsten Schulze
- Willem Arnold Alting Siberg
- Jonathan SHEFFIELD
Birth - 23 April 1754 (211 year anniversary) - Holliston, Middlesex, MA - John, Jr Fenno
- Jonathan Upham
- Christian August Eckermann
Birth - 23 April 1705 (260 year anniversary) - Lutjenhof, Germany - Otto Eckermann
- Claus Iversen
Birth - 23 April 1624 (341 year anniversary) - Assens, Syddanmark, Denmark - Anthony Fisher
Birth - 23 April 1591 (374 year anniversary) - SYLEHAM, SUFFOLK, ENGLAND - William La Zouche
- Bela Iii (Harmadik Bela], King Of Hungary
- Affonso Ii "The Fat" Prince Of PORTUGAL [TWIN] Portugal
Birth - 23 April 1185 (780 year anniversary) - , Coimbra, Coimbra, PORTUGAL - Alexander I King Scotland
Death - 23 April 1124 (841 year anniversary) - , STIRLING, Stirlingshire, Scotland - Liudolf Count Of Brunswick
- Ethelred Ii "The Unready", King Of England
Death - 23 April 1016 (949 year anniversary) - , London, Middlesex, England - Sigurd Ii "Digri" Hlodversson
Death - 23 April 1014 (951 year anniversary) - Battle Of Clonta, , Dublin, Ireland - Herbert de Vermandois
- Graf Wichmann I "der Ältere" von Sachsen
- Æthelred I. von Wessex
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