Nikola I Petrović-Njegoš was the last monarch of Montenegro from 1860 to 1918, reigning as prince from 1860 to 1910 and as the country's first and only king from 1910 to 1918. His grandsons were kings Alexander I of Yugoslavia and Umberto II of Italy among others.

Montenegro is a country in Southeast Europe, located in the Balkans. It is bordered by Bosnia and Herzegovina to the north, Serbia to the northeast, Kosovo to the east, Albania to the southeast, and Croatia and the Adriatic Sea to the northwest with a coastline of 293.5 km. Podgorica is the country's capital and its largest city; it covers 10.4% of Montenegro's territory of 13,812 square kilometres (5,333 sq mi), and is home to roughly 31% of its total population of 621,000. Cetinje is the former royal capital and cultural centre of Montenegro and is the location of several national institutions, including the official residence of the President of Montenegro.