Gerard I of Gueldres
Count of Wassenburg and Gueldres
Nicknamed ' Flaminius '
Built the Castle of Wassenburg between the Rhine and Meuse rivers
Born (c1055) - Died (after 1138)

Father - Dietrich of Teisterbant
Mother - NN

Gerard I married (c1088) Clementia Ermengarde of Poitou
Children :

• Gerard II of Gueldres
• Yolande of Gueldres
• Jutta of Gueldres