William akaedza kuvandudza chinzvimbo chake nekuroora, muna 1677, hama yake yekutanga Mary, mwanasikana mukuru akapona weDuke weYork, akazotevera Mambo James II weEngland (James VII weScotland). Mary aive nemakore gumi nerimwe mudiki kwaari uye akafungidzira kuramba mutambo weStuart kubva kune vatengesi veAmsterdam avo vaisafarira amai vake (mumwe Mary Stuart), asi William akatenda kuti kuroora Mary kwaizowedzera mikana yake yekubudirira kuumambo hwaCharles, uye kwaizotsausa mambo weEngland kubva kumitemo yake yeFrance. James haana kuda kubvuma, asi Charles II akamanikidza mukoma wake kuti abvume. Charles aida kushandisa mukana wekuroora kuti awane simba mukutaurirana zvine chekuita nehondo, asi William akasimbirira kuti vaviri ava vasarudzwe vakaparadzaniswa.
achiroora, muna 1677, hama yake yokutanga Mary