Who was the Grand Duke of Alba and Iron Duke in the Netherlands that defeated William the Silent's invading army?
Battle of Jodoigne The Battle of Jodoigne was fought October 20th 1568 between Spanish and Dutch forces. The Spanish under Fernando Álvarez de Toledo, 3rd Duke of Alba destroyed the rear guard of William the Silent's invading army, forcing him to abandon his invasion of the Netherlands and to retreat into Germany.
Battle of Worringen The conflict arose after Duke Waleran IV of Limburg, a scion of the Lotharingian Ardennes-Verdun dynasty, had died without male heirs in 1279. His duchy was inherited by his daughter Ermengarde, who had married Count Reginald I of Guelders about 1270. Her husband claimed the Limburg heritage and in 1282 had his ducal title recognized by the German king Rudolf I.