The house of Petrović came originally from
Herzegovina and settled in
Njeguši around 1400. Niegosch was born around 1425 and became the
Voivode of Njegoš. Nicholas descends from Danilo Petrović-Njegoš who obtained the hereditary Dignity of
Vladika (Prince-Bishop) of Montenegro in 1711 when it became a
theocracy. Danilo I Petrović-Njegoš was recognized as Sovereign
Prince of Montenegro by
Russia on 21 March 1852, and established succession by male
primogeniture. His successor,
Prince Nikola I assumed the
style of
Royal Highness on 19 December 1900, and then the title of
King on 28 August 1910. Nicholas is also related to the former royal
House of Obrenović through
Jevrem, younger brother of
Miloš Obrenović I, Prince of Serbia. During
World War I, the Petrović Njegoš family were forced to flee the country in 1915 after the
Army of Montenegro was overwhelmed by the troops of the
Austro-Hungarian Empire. At the end of the war, Montenegro joined the
Kingdom of Serbia, while the
Podgorica People's Assembly abolished the
Kingdom of Montenegro and
deposed the
Petrović Njegoš dynasty. The family gained
French citizenship and made their home in
France, where
Nikola I of Montenegro died in
exile in 1921. The same year, King Nikola's maternal grandson,
Alexandar Karađorđević (Prince Nikola I's cousin) became king of the
Kingdom of Serbs, Croats and Slovenes, of which Montenegro had become a part. Though the Kingdom of the Serbs, Croats and Slovenes was proclaimed on 13 November 1918, it was never recognized by Nikola I, who maintained a government-in-exile, which was headed by the ex-king's former
aide-de-camp and ambassador to Washington, General
Anto Gvozdenović, until the Conference of Ambassadors at Paris gave international recognition to the union 13 July 1922. Nicholas I's heir was his eldest son,
Crown Prince Danilo (titular King Danilo II), who abdicated after one week, recognizing his cousin's reign over Serbia (including the territories of Montenegro) and Yugoslavia. The family's dynastic claim was taken up by Nicholas I's grandson,
Michael, Prince of Montenegro, the titular King Mihajlo I, who was the father of Prince Nikola II. He died in exile in 1986. ==Early life==