He acquired the lands of Overijssel and the Bishopric of Utrecht (see Guelders Wars), purchased Friesland from Duke George of Saxony and regained Groningen and Gelderland.
Ta omandas Overijsseli ja Utrechti piiskopkonna maad (vaata Gelderni sõjad), ostis Saksimaa hertsogilt Georgilt Friisimaa ning taasomandas Groningeni ja Gelderni.