Anna was born on August 18th, 1873 to Nicholas, Prince of Montenegro and his consort Milena Vukotić; on 28 August 1910, Nicholas would become King of Montenegro. Anna's sisters were particularly noted for achieving marriages with powerful royal figures, causing their father, like the contemporary Christian IX of Denmark, to earn the sobriquet "father-in-law of Europe"; one source declared that these advantageous marriages "had done more for than all the brave deeds of this nation of warriors". For instance, Princesses Zorka, Milica, Anastasia and Elena all made important marriages into the royal families of Serbia, Russia and Italy, respectively. Like all her sisters, Anna was educated in Russia at the expense of the Russian imperial family, and upon each of their marriages, were given dowries by the Russian emperor.
Anna was said to be "unusually beautiful", vivacious, and tall, while Francis was handsome, likable, tall, and well-educated. The happily married couple had no children. Anna and Francis were very popular with their respective families. The same year they married, Francis was rumored to have been chosen as governor-general of the politically turbulent island of Crete by Turkey and Greece. Prior to World War I, Anna and her husband spent much of their time at Prinz Emils Garten in Darmstadt, but once the war began, they were advised by Francis' cousin Ernest Louis, Grand Duke of Hesse to stay out of Germany. When Italy joined the war, the couple found themselves to be permanent exiles, and consequently settled in Switzerland, where Francis pursued his academic studies. The couple had never been rich, but now their financial state was worse than ever; by August 1916, Francis was described as "awfully bad off". Throughout her life, Princess Anna anonymously wrote and published a large number of musical compositions that obtained a certain degree of commercial success. The royalties from these compositions provided a much-needed source of income for the couple. While working on an opera in 1899, Anna gained an interview of considerable length with the famous Italian composerPietro Mascagni in the royal palace of Naples, as she wanted to consult him for musical advice. Anna's sister Crown Princess Elena of Italy helped her procure the meeting.
Death
Francis died on 31 July 1924 in Territet. Though she had never met him, his niece-in-law Edwina Mountbatten had continuously sent him an allowance during her lifetime, and continued to do so with his widow, sending Anna money until Edwina's own death in 1960. In the British royal family's 1917 eradication of German titles and styles, the Battenbergs became known as Mountbattens – all except Prince Francis and Anna. Anna would continue to use the name Battenberg until her death, surpassing all others in the royal house. Anna died on 22 April 1971 in Montreux, Switzerland. For a number of years, she was Europe's oldest living princess.
Titles and styles
18 August 1874 - 18 May 1897: Her Highness Princess Anna Petrović-Njegoš of Montenegro
18 May 1897 - 28 August 1910: Her Highness Princess Anna of Battenberg
28 August 1910 - 22 April 1971: Her Royal Highness Princess Anna of Battenberg