KnowraPhilip IV of SpainLinked fromLinked fromThe 18 pages that link to Philip IV of Spain, each with the reason it gives.All 18Broader topic 2Related 15Compared with 1Habsburg SpainBroader topic: His long reign exposed the strain of maintaining the monarchy’s commitments.Philip III of SpainBroader topic: His accession ended Philip III’s reign and began a new period of Habsburg rule.