Duchy of Surabaya
... that after the Mataram conquest of the Duchy of Surabaya, the son of its last duke married the sister of the conqueror, Sultan Agung?
... that after the <a href="./Mataram_conquest_of_Surabaya" id="mwAmg" rel="mw:WikiLink" title="Mataram conquest of Surabaya">Mataram conquest</a> of the <b id="mwAmk"><a href="./Duchy_of_Surabaya" id="mwAmo" rel="mw:WikiLink" title="Duchy of Surabaya">Duchy of Surabaya</a></b>, the son of its last duke married the sister of the conqueror, <a class="mw-redirect" href="./Sultan_Agung" id="mwAms" rel="mw:WikiLink" title="Sultan Agung">Sultan Agung</a>?