Family: William IV, Count of Ponthieu / Alys, Countess of the Vexin (F551618527)

• Male William IV, Count of Ponthieu

  
  

  Birth
  Death	Yes, date unknown
  Burial
  Marriage	20 Aug 1195
  Father	John I, Count of Ponthieu | F551618526 Group Sheet
  Mother	Beatrice of Saint-Pol | F551618526 Group Sheet

  
  

  Female Alys, Countess of the Vexin

  
  

  Birth
  Death	Yes, date unknown
  Burial
  Father	Louis VII the Younger Capet, King of France | F1350 Group Sheet
  Mother	Constance of Castile | F1350 Group Sheet

  
  

  Female Marie, Countess of Ponthieu

  
  

  Birth	17 Apr 1199
  Death	1251
  Burial