On Altena Castle the troops of Willem VI resisted. A siege of the castle was led by lower ranking commanders of the Count of Holland. By 22 May 1387 a truce till mid-August had been concluded. The truce seems to have been of the type that the besieged would surrender if no help arrived before that date, but this is a guess. Soon after, William of Oostervant gained full control of Altena and its castle.
