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Friedrich IV. Regensburg, von

Friedrich IV.'s father was Friedrich III. Regensburg, von and his mother was Svatava Przemyslovna. His paternal grandfather was Friedrich II. Regensburg, von and his paternal grandmother is Luitgard Radelnburg, von; his maternal grandparents were Wladislaw I. Przemyslovec and Rixa Berg, Von. He is an only child.

Ancestor Pedigree Chart
- Dietrich I. Wittelsbach ^*
  
  Friedrich II. Diessen, von
  - d.1075
  
  Friedrich Regensburg, von
  
  Friedrich II. Regensburg, von
  - d.1120
  
  Adelheid
  
  Friedrich III. Regensburg, von
  - d.1148
  
  Luitgard Radelnburg, von
  
  Friedrich IV. Regensburg, von
  
  Oldrzich I. Przemyslovec ^*
  - d.09 Nov 1037
  
  Brzetislaw I. "the Warrior" Przemyslovec
  - b.1005 d.10 Jan 1055
  
  Božena ^*
  - d.1052
  
  Wratislaw II. Przemyslovec
  - b.1032 d.14 Jan 1092 in t.
  
  Heinrich Schweinfurt, von ^*
  - b.0950 d.08 Sep 1017
  
  Judith Schweinfurt, von
  - d.02 Aug 1058
  
  Gerberge Kinziggau, im ^*
  
  Wladislaw I. Przemyslovec
  - b.1066 d.12 Apr 1125
  
  Mieszko II. Lambert Piast ^*
  - b.0990 d.10 May 1034
  
  Kazimierz I. Karol Piast
  - b.25 Jul 1016 d.19 Mar 1058
  
  Richeza Lorraine, de
  - b.0995 d.21 Mar 1063 in Saalfeld
  
  Swatawa Piast
  - d.1126
  
  Jaroslav I. Vladimirovitch Rurikov ^*
  - b.0978 d.20 Feb 1054
  
  Dobronega "Maria" Rurikov
  - b.1011 d.1087
  
  Ingegerd "Anna" Olofsdotter ^*
  - d.10 Feb 1050
  
  Svatava Przemyslovna
  - d.1136
  
  Heinrich Berg, Von
  
  Rixa Berg, Von
  - d.1125
  
  ^*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)