Sophie's father was the fourth son of King George I of Greece and Grand Duchess Olga Konstantinovna of Russia. Through King George, she was a great-granddaughter of King Christian IX of Denmark. Through Queen Olga, she was a great-great-granddaughter of Emperor Nicholas I of Russia. Sophie was also a great-great-granddaughter of Queen Victoria, through descent from Victoria's second daughter, Alice, Grand Duchess of Hesse. Sophie was the closest sister in age to Prince Philip, Duke of Edinburgh, the consort of Elizabeth II. Her three sisters were Margarita, Princess of Hohenlohe-Langenburg, Theodora, Margravine of Baden and Cecile, Hereditary Grand Duchess of Hesse-Darmstadt. In 1913 Sophie's grandfather, King George I, was assassinated and in 1917 most of the Greek royal family went into exile when her uncle, King Constantine I, was deposed in favour of his younger son, King Alexander I. The family returned to Greece upon the brief restoration of Constantine to the throne when Alexander died in 1920, but left again when he abdicated in 1922, inaugurating the even briefer reign of Constantine's eldest son, George II. Banished with King George in 1924, the Greek monarchy was reinstated in 1935, by which time Sophie had married and was raising a family in Germany. During these periods of exile Sophie, her parents, and siblings lived abroad in reduced, though never uncomfortable, circumstances, sometimes in hotels and sometimes with relatives in France, England or Germany. In the late 1920s, her mother, Alice, became increasingly mentally unstable and was committed to a series of sanitariums in Germany by her mother, Princess Victoria of Hesse-Darmstadt, Marchioness of Milford Haven. Eventually released, Alice wandered Europe until, following the death in a plane crash of Sophie's sister, Cecilie, in November 1937, she resumed contact with her children and took up a life dedicated to religious charity in Athens. Meanwhile, Sophie's father remained in contact with his children, but lived apart from them, settling in Monaco. Sophie and her sisters lived under the care and at the expense of relatives, all four princesses marrying German princes between December 1930 and August 1931. Their brother Philip, not yet 10 years old, was sent to various boarding schools and, later, to a British naval academy.
Prince Welf Ernst of Hanover, who married Wilbeke von Gunsteren and had issue
Prince Georg of Hanover, who married Victoria Anne Bee and had issue
Princess Friederike of Hanover, who married Jerry William Cyr and had issue
Monarch's consent to marriage withheld
Sophie's marriage to George William constitutes the only known case of permission to marry being withheld by the British sovereign from a descendant of King George II, who had been obliged by the Royal Marriages Act 1772 to apply for royal consent to marry. Although permission to marry had been granted by George VI in 1937 to George William's sister, Frederica of Hanover, future Queen of the Hellenes, when Sophie became engaged to George William, a German citizen, in 1945, the United Kingdom was at war with Germany. When George William's father, Ernest Augustus III, Duke of Brunswick and Head of the House of Hanover, submitted the request to marry on his son's behalf—a formality his branch of George III's descendants had continued to observe even after obtaining the German crowns of the Kingdom of Hanover and the Duchy of Brunswick Even though the dynastic titles and peerages of the Hanovers had been suspended since 1919, no British monarch had withheld marital authorisation from any kinsman or kinswoman who sought it. Although there was apparently no question of officially denying the request, the British government advised the king that it would be of dubious "propriety" to give royal assent to his cousin's application. George VI then unsuccessfully sought to have the Hanovers informally advised that the exigencies of war, rather than personal disapproval, prevented him from approving the marriage to Sophie. Thus, no reply was made to the Duke of Brunswick's correspondence, the couple wed without George VI's consent, and after the war the practice of British monarchs receiving and acquiescing to requests to marry from the Hanovers resumed. At the time British officials reviewing the matter considered that the marriage and its issue would not be legitimate in the United Kingdom, having failed to obtain the prior consent of the King in Council. The repeal of the Royal Marriage Act as part of implementation of the Succession to the Crown Act 2013 does not specifically address the unique position of the descendants of Sophie and George William's marriage. The 2013 Act does not confer legitimacy upon the children of a marriage which formerly required approval under the Royal Marriage Act, if such approval was sought but not obtained. Nor does it confer succession rights upon a descendant of any marriage which has already transpired, if such rights were not already extant.
Later years and death
Until her death on 24 November 2001 in Munich, Sophie was a frequent visitor to her brother, Prince Philip and her sister-in-law, Queen Elizabeth II. She was a godmother to their son, Prince Edward, Earl of Wessex. Sophie was often seen at events such as the annual Windsor Horse Show in the presence of her brother and his family. She was survived by her second husband, seven of her eight children and her younger brother, Prince Philip.
Titles and styles
26 June 1914 – 15 December 1930: Her Royal Highness Princess Sophie of Greece and Denmark
15 December 1930 – 23 April 1946: Her Royal Highness Princess Christoph of Hesse
23 April 1946 – 24 November 2001: Her Royal Highness Princess George William of Hanover
