Princess Kira of Prussia
Princess Kira of Prussia
( Kira Auguste Viktoria Friederike; 27 June 1943 – 10 January 2004) was the fourth child and second daughter of Louis Ferdinand, Prince of Prussia and Grand Duchess Kira Kirillovna of Russia.
Princess Kira was born in Cadienen, East Prussia( today Kadyny, Poland).
She married Thomas Frank Liepsner on 10 September 1973 in a civil ceremony.
The religious ceremony was held the next day at Felizenweil.
They were divorced in 1984.
They had one daughter, Kira- Marina Liepsner( born 22 January 1977), who married Andreas Felix Paul von Bismarck( born 31 January 1979) on 7 May 2005 in St. Peter und Paul Church on Nikolskoë, Berlin.
She died in Berlin after a long illness.
Her urn was buried in Hohenzollern Castle.
Grand Duchess Olga Pavlovna of Russia
Grand Duchess Olga Pavlovna of Russia  was a "Grand Duchess of Russia" as the second youngest daughter and seventh child of Emperor Paul I of Russia and his empress consort, Sophie Dorothea of Württemberg.
Princess Marie Cécile of Prussia
Princess Marie- Cécile of Prussia( Marie- Cécile Kira Viktoria Luise; born 28 May 1942) is the daughter of Louis Ferdinand, Prince of Prussia, and his wife, Grand Duchess Kira Kirillovna of Russia.
Her paternal grandparents were William, German Crown Prince, and Duchess Cecilie of Mecklenburg- Schwerin; maternally, she is a granddaughter of Grand Duke Cyril Vladimirovich of Russia and Princess Victoria Melita of Saxe- Coburg and Gotha.
Grand Duchess Maria Vladimirovna of Russia
Grand Duchess Maria Vladimirovna of Russia (born 23 December 1953 in Madrid) has been a claimant to the headship of the Imperial Family of Russia (who reigned as Emperors and Autocrats of All the Russias from 1613 to 1917) since 1992.
Although she has used Grand Duchess of Russia as her title of pretence with the style Imperial Highness throughout her life, her right to do so is disputed.
She is a great-great-granddaughter in the male line of Emperor Alexander II of Russia.
Grand Duchess Maria Kirillovna of Russia
Grand Duchess Maria Kirillovna of Russia (2 February 1907 – 25 October 1951) was the eldest daughter of Grand Duke Kirill Vladimirovich of Russia and Grand Duchess Victoria Feodorovna.
She was born in Coburg when her parents were in exile because their marriage had not been approved by Tsar Nicholas II.
She was generally called "Marie," the French version of her name, or by the Russian nickname "Masha.
" The family returned to Russia prior to World War I, but was forced to flee following the Russian Revolution of 1917.
Prince Dmitri Alexandrovich of Russia
Prince Dmitri Alexandrovich of Russia( 15 August 1901 – 7 July 1980) was the fourth son and fifth child of Grand Duke Alexander Mikhailovich of Russia and Grand Duchess Xenia Alexandrovna of Russia.
He was a nephew of Tsar Nicholas II of Russia.
Grand Duchess Kira Kirillovna of Russia
Grand Duchess Kira Kirillovna of Russia (9 May 1909 – 8 September 1967) was the second daughter of Grand Duke Kirill Vladimirovich of Russia and Princess Victoria Melita of Saxe-Coburg and Gotha.
She married the head of the German Imperial House, Prince Louis Ferdinand of Prussia.
Prince Christian-Sigismund of Prussia
Prince Christian- Sigismund of Prussia( born March 14, 1946) is one of the three paternal uncles of Georg Friedrich, Prince of Prussia, head of the House of Hohenzollern since 1994, which reigned over Germany until 1918.
He is the youngest of four sons born to Louis Ferdinand, Prince of Prussia( 1907- 1994) and Grand Duchess Kira Kirillovna of Russia( 1909- 1967).
He was the heir presumptive to the headship of the deposed House of Hohenzollern from the death of his father to 20 January 2013, when Georg Friedrich fathered twin sons, relegating Christian- Sigismund to a more remote place in the Line of succession to the former German throne.
Princess Victoria Melita of Saxe-Coburg and Gotha
Princess Victoria Melita of Saxe-Coburg and Gotha , later Grand Duchess Victoria Feodorovna of Russia (25 November 1876 – 2 March 1936) was the third child and second daughter of Alfred, Duke of Saxe-Coburg and Gotha, and Grand Duchess Maria Alexandrovna of Russia.
She was a granddaughter of Queen Victoria of the United Kingdom and Emperor Alexander II of Russia.
Born a British princess, Victoria spent her early life in England and lived in Malta for three years, where her father was serving in the Royal Navy.
In 1889 the family moved to Coburg, where Victoria's father became the reigning duke in 1893.
In her teens Victoria fell in love with her maternal first cousin Grand Duke Kirill Vladimirovich of Russia, but the disapprobation of marriage between first cousins of his faith, Orthodox Christianity, discouraged their romance.
Bowing to family pressure, Victoria married her paternal first cousin, Ernest Louis, Grand Duke of Hesse and by Rhine in 1894, following the wishes of their grandmother, Queen Victoria.
Their marriage was a failure.
Victoria scandalized the royal families of Europe when she divorced her husband in 1901.
The couple's only child, Princess Elisabeth of Hesse and by Rhine, died of typhoid fever in 1903.
Victoria married Grand Duke Kirill Vladimirovich in 1905.
They wed without the formal approval of Britain's King Edward VII, required by the Royal Marriages Act 1772, and in defiance of Tsar Nicholas II.
In retaliation, the Tsar stripped Kirill of his offices and honours, also initially banishing the couple from Russia.
They had two daughters and settled in Paris before being allowed to visit Russia in 1909.
In 1910 they moved to Russia, where Nicholas recognized her as Grand Duchess Victoria Feodorovna.
After the fall of the Russian monarchy in 1917, they escaped to Finland (then part of the Russian Empire) where she gave birth to her only son.
In exile they lived for some years among her relatives in Germany, and from the late 1920s on an estate they bought in Saint-Briac.
In 1926, Kirill proclaimed himself emperor in exile and Victoria supported her husband's claims.
Victoria died after suffering a stroke while visiting her daughter Maria in Amorbach.
Abdul-Vahed Niyazov
' of Russia.

Question: Why did Grand Duchess Kira Kirillovna Of Russia's mother die?
Answer: stroke