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 Laurentien of the Netherlands Princess Laurentien of the Netherlands (née "Petra Laurentien Brinkhorst"; born 25 May 1966) is the wife of Prince Constantijn and sister-in-law of King Willem-Alexander and Queen Máxima.