Reinald IV, Duke of Guelders and Jülich Duke of Guelders and Jülich (c. 1365-1423) (1365–1423) Parents Maria of Guelders William II, Duke of Jülich Children Willem van Gulik-Wachtendonk Siblings William I of Guelders and Jülich Joanna of Jülich Partners Maria of Guelders
