When Violet Wegner became HRH Princess Pierre of Montenegro, who was her sister-in-law?
Elena of Montenegro Princess Elena of Montenegro or more commonly known as Queen Elena of Italy (8 January 1871 – 28 November 1952) nicknamed "Jela" was the daughter of King Nicholas I of Montenegro and his wife, Milena Vukotić. As wife of Victor Emmanuel III of Italy, she was Queen of Italy from 1900 until 1946 and Queen consort of the Albanians from 1939 until 1943.
Princess Catherine Ivanovna of Russia Princess Catherine Ivanovna of Russia (Russian: Княжна Екатери́на Иоа́нновна ; 12 July 1915 – 14 July 2007) was a great-great-granddaughter of Tsar Nicholas I of Russia and a niece of King Alexander I of Yugoslavia. She was the last member of the Imperial Family to be born before the fall of the dynasty, and was ultimately to become the last surviving uncontested dynast of the Imperial House of Russia.