What is Nicholas I of Montenegro?
{{Infobox royalty|name=Nikola I<br>Никола I|house=[[Petrović-Njegoš dynasty|Petrović-Njegoš]]|religion=[[Serbian Orthodox Church|Serbian Orthodoxy]]|burial_place=[[Court Church (Cetinje)|Court Church]], [[Cetinje]], Montenegro{{Cref2|a}}|burial_date=1 October 1989|death_place=[[Antibes|Cap d'Antibes]], [[French Third Republic|France]]|death_date={{death date and age|1921|3|1|1841|10|7|df=y}}|birth_place=[[Njeguši]], [[Prince-Bishopric of Montenegro|Montenegro]]|birth_date={{birth date|1841|10|7|df=y}}|mother=Anastasija ''Stana'' [[Martinovitch-Orlovitch|Martinović]]|father=[[Mirko Petrović-Njegoš|Mirko Petrović-Njegoš, Grand ''Voivode'' of Grahovo]]|issue=|image=Nicholas I of Montenegro.jpg|spouse={{marriage|[[Milena of Montenegro|Milena Vukotić]]<br />|8 November 1860}}|full name=Nikola Mirkov Petrović-Njegoš|successor1=''Himself <small>(as King of Montenegro)</small>|predecessor1=[[Danilo I, Prince of Montenegro|Danilo I]]|reign1={{nowrap|13 August 1860 – 28 August 1910}}|succession1=[[Prince of Montenegro]]|successor=''[[Podgorica Assembly|Title abolished]]''|predecessor=''Himself <small>(as Prince of Montenegro)</small>|reign={{nowrap|28 August 1910 – 26 November 1918}}|succession=[[King of Montenegro]]|signature=Signature of Nicholas I Petrović-Njegoš.jpg}} '''Nikola I Petrović-Njegoš''' ({{lang-sr-cyr|Никола I Петровић-Његош}}; {{OldStyleDate|7 October|1841|25 September}} – 1 March 1921) was the ruler of [[Montenegro]] from 1860 to 1918. He was the [[Principality of Montenegro|prince]] from 1860 to 1910. He was the country's only [[Kingdom of Montenegro|king]], which was from 1910 to 1918. After [[Austria-Hungary]] collapsed in 1918, [[Montenegro]] joined the [[Kingdom of Yugoslavia]]. [[Category:1841 births]] [[Category:1921 deaths]] [[Category:Montenegrin people]] {{bio-stub}}