Family: William I von Weimar, Count in South Thuringia, in the Helme, and Altgaus, and of Weimar / daughter (F3945)  ^[1] 

• Male William I von Weimar, Count in South Thuringia, in the Helme, and Altgaus, and of Weimar

  
  

  Birth
  Death	16 Apr 963
  Burial
  Marriage
  Father	Meinwerk I, Count in Thuringia | F4346 Group Sheet
  Mother	Gerlint | F4346 Group Sheet

  
  

  Female daughter

  
  

  Birth
  Death
  Burial
  Father	Poppo III, Count in the Grabfeld and the Bavarian Nordgau | F3960 Group Sheet
  Mother

  
  

  Male + William II von Weimer, Duke of Thuringia

  
  

  Birth
  Death	15 Dec 1003
  Burial		Naumburg, Saxony-Anhalt, Germany
  Spouse	daughter | F3150
  Marriage

  
  

• Sources

  [S60] Stuart, Roderick W. Royalty for Commoners, The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa Fourth Edition, (Baltimore, Maryland: Genealogical Publishing Company, 2002).