Kammala jumla mai zuwa: William Frederick, ɗan magajin gari na ƙarshe, ya koma Netherlands a 1813 kuma ya ayyana kansa Sarkin Yarima na Netherlands. Shekaru biyu bayan haka, Majalisar Vienna ta kara da kudancin Netherlands zuwa arewa don ƙirƙirar ƙasa mai ƙarfi a kan iyakar arewacin Faransa. William Frederick ya ɗaga wannan United Netherlands zuwa matsayin masarauta kuma ya ayyana kansa a matsayin Sarki William I a 1815. Bugu da ƙari, William ya zama babban Duke na Luxembourg a musayar dukiyarsa ta Jamus. Koyaya, Kudancin Netherlands ya kasance ya rabu da al'adu daga arewa tun 1581, kuma
suka yi tawaye. Kudancin ya sami 'yancin kai a 1830 a matsayin Belgium (wanda Arewacin Netherlands suka amince da shi a 1839 yayin da aka kirkiro Mulkin Netherlands ta hanyar doka), yayin da aka yanke haɗin kai tsakanin Luxembourg da Netherlands a 1890, lokacin da William III ya mutu ba tare da magada maza da suka tsira ba. Dokokin haɓaka sun hana 'yarsa Sarauniya Wilhelmina zama Grand Duchess na gaba.