Sophia of Minsk
Sophia of Minsk or Sophia of Polotsk( c. 1140 – 5 May 1198) was a Danish queen consort by marriage to King Valdemar I of Denmark, and a landgravine of Thuringia by marriage to Louis III, Landgrave of Thuringia.
Sophie, Princess of Prussia
Sophie Johanna Maria, Princess of Prussia( née" Princess of Isenburg", born 7 March 1978) is the wife of Georg Friedrich, Prince of Prussia, head of the House of Hohenzollern, members of which reigned as kings of Prussia and as German emperors until deposed in 1918.
Anna Sophia of Prussia
Anna Sophia of Prussia (11 June 1527 – 6 February 1591) was Duchess of Mecklenburg by marriage to John Albert I, Duke of Mecklenburg.
Christian of Oliva
Christian of Oliva, also Christian of Prussia( died 4 December 1245) was the first missionary bishop of Prussia.
Frederick III, German Emperor
Frederick III (18 October 1831 – 15 June 1888) was German Emperor and King of Prussia for ninety-nine days in 1888, the Year of the Three Emperors.
Known informally as "Fritz", he was the only son of Emperor Wilhelm I and was raised in his family's tradition of military service.
Although celebrated as a young man for his leadership and successes during the Second Schleswig, Austro-Prussian and Franco-Prussian wars, he nevertheless professed a hatred of warfare and was praised by friends and enemies alike for his humane conduct.
Following the unification of Germany in 1871 his father, then King of Prussia, became the German Emperor.
Upon Wilhelm's death at the age of ninety on 9 March 1888, the thrones passed to Frederick, who had by then been German Crown Prince for seventeen years and Crown Prince of Prussia for twenty-seven years.
Frederick was suffering from cancer of the larynx when he died, aged fifty-six, following unsuccessful medical treatments for his condition.
Frederick married Victoria, Princess Royal, eldest daughter of Queen Victoria of the United Kingdom.
The couple were well-matched; their shared liberal ideology led them to seek greater representation for commoners in the government.
Frederick, in spite of his conservative militaristic family background, had developed liberal tendencies as a result of his ties with Britain and his studies at the University of Bonn.
As the Crown Prince, he often opposed the conservative Chancellor Otto von Bismarck, particularly in speaking out against Bismarck's policy of uniting Germany through force, and in urging that the power of the Chancellorship be curbed.
Liberals in both Germany and Britain hoped that as emperor, Frederick III would move to liberalize the German Empire.
Frederick and Victoria were great admirers of Prince Albert, Queen Victoria's husband.
They planned to rule as consorts, like Albert and Queen Victoria, and to reform what they saw as flaws in the executive branch that Bismarck had created for himself.
The office of Chancellor, responsible to the Emperor, would be replaced with a British-style cabinet, with ministers responsible to the Reichstag.
Government policy would be based on the consensus of the cabinet.
Frederick "described the Imperial Constitution as "ingeniously contrived chaos.
According to Michael Balfour:
However, Frederick's illness prevented him from effectively establishing policies and measures to achieve this, and such moves as he was able to make were later abandoned by his son and successor, Wilhelm II.
The timing of Frederick's death and the length of his reign are important topics among historians.
His premature demise is considered a potential turning point in German history; and whether or not he would have made the Empire more liberal if he had lived longer is still discussed.
Princess Charlotte of Prussia (1831–1855)
Princess Charlotte of Prussia( 21 June 1831 – 30 March 1855), was by birth a Princess of Prussia and member of the House of Hohenzollern and by marriage Hereditary Princess of Saxe- Meiningen.
She was the eldest child and daughter of Prince Albert of Prussia( younger son of Frederick William III of Prussia and Louise of Mecklenburg- Strelitz) and his first wife Princess Marianne of the Netherlands( daughter of William I of the Netherlands and Wilhelmine of Prussia).
Sophia of Prussia
Sophia of Prussia ("Sophia Dorothea Ulrike Alice"; 14 June 1870 – 13 January 1932) was Queen consort of Greece during 1913–1917 and 1920–1922.
A member of the House of Hohenzollern and daughter of Frederick III, German Emperor, Sophia received a liberal and anglophile education, under the supervision of her mother, Victoria, Princess Royal.
In 1889, less than a year after the death of her father, she married her third cousin Constantine, heir apparent to the Greek throne.
After a difficult period of adaptation in her new country, Sophia gave birth to six children and became involved in the assistance to the poor, following in the footsteps of her mother-in-law, Queen Olga.
However, it was during the wars which Greece faced during the end of the 19th and the beginning of the 20th century that Sophia showed the most social activity: she founded field hospitals, oversaw the training of Greek nurses, and healed wounded soldiers.
However, Sophia was hardly rewarded for her actions, even after her grandmother Queen Victoria decorated her with the Royal Red Cross after the Thirty Days' War: the Greeks criticized her links with Germany.
Her brother Emperor William II was indeed an ally of the Ottoman Empire and openly opposed the construction of the "Megali Idea", which could establish a Greek state that would encompass all ethnic Greek-inhabited areas.
During World War I, the blood ties between Sophia and the German Emperor also aroused the suspicion of the Triple Entente, which criticized Constantine I for his neutrality in the conflict.
After imposing a blockade of Greece and supporting the rebel government of Eleftherios Venizelos, causing the National Schism, France and its allies deposed Constantine I in June 1917.
Sophia and her family then went into exile in Switzerland, while the second son of the royal couple replaced his father on the throne under the name of Alexander I.
At the same time, Greece entered the war alongside the Triple Entente, which allowed it to grow considerably.
After the outbreak of the Greco-Turkish War in 1919 and the untimely death of Alexander I the following year, the Venizelists abandoned power, allowing the royal family's return to Athens.
The defeat of the Greek army against the Turkish troops of Mustafa Kemal, however, forced Constantine I to abdicate in favor of his eldest son George II in 1922.
Sophia and her family then were forced to a new exile, and settled in Italy, where Constantine died one year later (1923).
With the proclamation of the Republic in Athens (1924)
Sophia spent her last years alongside her family and died of cancer in Germany in 1932.
Prince Albert of Prussia (1809–1872)
Prince Frederick Henry Albert of Prussia (4 October 1809 – 14 October 1872) was the fifth son and youngest child of King Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
His parents had fled to East Prussia after the occupation of Berlin by Napoleon, and Albert was born in Königsberg.
Two of Albert's elder brothers were Frederick William IV, King of Prussia from 1840 till 1861, and William I, King of Prussia from 1861 to 1888 and German Emperor from 1871 until 1888.
Princess Elisabeth of Prussia
Princess Elisabeth of Prussia( 18 June 1815 – 21 March 1885) was the second daughter of Prince Wilhelm of Prussia and Landgravine Marie Anna of Hesse- Homburg and a granddaughter of Frederick William II of Prussia.
Prince Philip, Duke of Edinburgh is her great- great- grandson.
Sophia Olelkovich Radziwill
Sophia Olelkovich Radziwill (Saint Sophia of Slutsk, Princess Sophia of Slutsk; May 1, 1585 – March 19, 1612) was a Lithuanian Orthodox Christian saint.
She was the last descendant of the family Olelkovich-Slutsk (princes of Slutsk and Kopyl) who were descended from Prince Algirdas.
She was canonized by the Orthodox Church in 1983.
The church of St. Sophia of Slutsk in Minsk is named after her.

Question: What is the cause of death of Sophia Of Prussia's father?