Greek and Romanian Royalty. She was the Queen Mother of Romania during the reign of her son King Michael from July 20, 1927 to June 8, 1930 and from September 6, 1940 to December 30, 1947. Her Royal Highness Princess Helen of Greece and Denmark was the third child and eldest daughter of Crown Prince Constantine of Greece, later to reign as King Constantine I, and Princess Sophia of Prussia, daughter of German Emperor Frederick III and his wife, Victoria, Princess Royal, the eldest child of Queen Victoria of England. As a child, her family went into exile several times for various reasons in Germany, Italy or Switzerland. On March 10, 1921 Princess Helen was married in Athens to Crown Prince Carol of Romania, who was later to reign as King Carol II, the eldest son of King Ferdinand and Queen Marie of Romania. She was his second wife and was the first princess of Greece to marry in Athens. Her husband had led and would continue to lead a controversial life, ultimately leading to their divorce in 1928, but not before the birth on October 25, 1921 of a son and heir, the future King Michael. With her son weighing nine pounds, she had a difficult pregnancy and birth. In December of 1925, her husband renounced his rights to the Romanian throne and left. Her husband had refused to give her the title of "Her Majesty The Queen of Romania". In July of 1927 with her new title of "Princess of Romania," her five-year old son Michael became king of Romania. She and her husband were divorced by 1928. Her title gave her no ruling power. She was granted the title "Queen Mother of Romania" with the style "Her Majesty" on September 8, 1940, during the reign of her son. In December 1947 her son, Michael, was forced to abdicate and she went into exile again, eventually settling in Lausanne, Switzerland. The Queen Mother was known for her efforts to save Romanian Jews from Nazi Forces during World War II, which led to the State of Israel awarding her the title of Righteous Among the Nations in 1993. She was originally buried in the Bois-de-Vaux Cemetery in Lausanne, Switzerland, but after 37 years, she was disinterred and reburied at the Monastery Curtea de Argeș in Romania on October 19, 2019. The New Archbishopric and Royal Cathedral was built by 2018 on the grounds of the Monastery and is the new burial site for the Royal Family of Romania.