United Duchies of Jülich-Cleves-Berg
The Treaty of Venlo of 7 September 1543 concluded the Guelders Wars (1502–1543), and the definitive acquisition of the Duchy of Guelders and the adjoining County of Zutphen by the House of Habsburg, adding them to the Habsburg Netherlands. William V, Duke of the United Duchies of Jülich-Cleves-Berg had to relinquish his claims to Guelders and Zutphen in favour of the Holy Roman Emperor and King of Spain, Charles V of Habsburg.