Title: Marie of Romania
Content:  Marie of Romania (born Princess Marie Alexandra Victoria of Edinburgh; 29 October 1875 – 18 July 1938) was the last Queen of Romania as the wife of King Ferdinand I. Marie was born into the British royal family. Her parents were Prince Alfred, Duke of Edinburgh (later Duke of Saxe-Coburg and Gotha) and Grand Duchess Maria Alexandrovna of Russia. Marie's early years were spent in Kent, Malta and Coburg. After refusing a proposal from her cousin, the future King George V, she was chosen as the future wife of Crown Prince Ferdinand of Romania, the heir apparent of King Carol I, in 1892. Marie was 
Title: Princess Marie of Romania (born 1964)
Content:  Princess Maria of Romania, also formerly a Princess of Hohenzollern-Sigmaringen (born 13 July 1964 ) is the fifth and youngest daughter of King Michael I and Queen Anne of Romania. Since 2015 Marie has lived in Romania and carried out a public role on behalf of the Romanian royal family.
Title: Princess Marie of Romania (born 1964)
Content:  Marie (Romanian: Maria) was born on 13 July 1964 at Copenhagen University Hospital Gentofte in Gentofte, Copenhagen, Denmark as the youngest of five daughters of King Michael I and Queen Anne. Maria was born while her father was in the United States on business for the New York Stock Exchange. Michael was informed by telephone that he'd become a father for the fifth time. Maria was baptised by the Orthodox Church, with her eldest sister, Princess Margareta, as godmother. Queen Marie, her paternal great-grandmother, was her namesake. As a young girl, Maria and her sisters were told "fascinating tales of a homeland they couldn't visit" by their father. Maria was educated in Switzerland where the family lived during exile, and spent most her early adult life living and working in the USA, including New York and New Mexico.
Title: Marie of Romania
Content:  In 1971, these were transferred to Bucharest's National Museum of Romanian History. It was not until the late period of Nicolae Ceaușescu's regime, the last years before the Romanian Revolution, that Marie's merits came to be acknowledged. In Romania, Marie is known by the nickname Mama Răniților ("Mother of the Wounded"), or simply as "Regina Maria", while in other countries she is remembered as the "Soldier Queen" and "Mamma Regina". Marie is also nicknamed "the mother-in-law of the Balkans", due to her children's marriages into the region's ruling houses. By the time of her death, Marie's children had ruled in three of the four 
Title: Princess Maria of Romania (1870–1874)
Content:  Princess Maria of Romania (Maria von Hohenzollern-Sigmaringen, 8 September 1870 – 9 April 1874) was the only child of then-Prince and future King Carol I of Romania and his wife, Elisabeth of Wied.
Title: Marie of Romania
Content: 29 October 1875 – 10 January 1893: Her Royal Highness Princess Marie of Edinburgh ; 10 January 1893 – 10 October 1914: Her Royal Highness The Crown Princess of Romania ; 10 October 1914 – 20 July 1927: Her Majesty The Queen of Romania ; 20 July 1927 – 18 July 1938: Her Majesty Queen Marie of Romania 
Title: Princess Maria of Romania (1870–1874)
Content:  Princess Maria was born in Bucharest as the first Princess of Romania that was also of the House of Hohenzollern-Sigmaringen, on 8 September 1870. After a month, in October 1870, she was baptised as a Romanian Orthodox at the monastery of Cotroceni (near the site of the present-day Cotroceni Palace). In her family, the young princess was nicknamed "Mariechen" (a possible homage to her parents' German heritage) or "Itty" (derived from little). Everyone who knew Maria described her as a beautiful and precocious young child, as she was said to look at maps and identify different countries for fun at the age of only two and a half. It is said that sometime before she died, Princess Maria told her mother that she would someday like to be able to ride a star. Maria had no prospect of inheriting her father's throne; the 1866 Constitution limited succession to males.
Title: Princess Ileana of Romania
Content:  Princess Ileana of Romania, also known as Mother Alexandra (5 January 1909 – 21 January 1991), was the youngest daughter of King Ferdinand I of Romania and his consort, Queen Marie of Romania. She was a great-granddaughter of Queen Victoria, Tsar Alexander II and Queen Maria II of Portugal. She was born as Her Royal Highness Ileana, Princess of Romania, Princess of Hohenzollern-Sigmaringen.
Title: Princess Elena of Romania
Content:  Princess Elena of Romania (born 15 November 1950 ) is the second eldest daughter of King Michael I and Queen Anne of Romania. Elena claims to be first in the line of succession to the former Romanian throne and headship of the House of Romania as her elder sister Margareta has no issue.
Title: Princess Marie of Romania (born 1964)
Content:  Maria visited Romania with her parents and other members of the family in 1997, and from this point onwards began visiting the country regularly for Christmas or family events such as her parents' 60th Wedding Anniversary and King Michael's 90th Birthday celebrations. On 7 May 2014, Maria was invested with the Grand Cross of the Order of the Crown in a ceremony conducted by Crown Princess Margareta at the Elisabeta Palace to mark Maria's upcoming 50th birthday. This was followed by a dinner at the Palace attended by the Prime Minister of Romania (Victor Ponta) and other guests. On 21 April 2015 it was announced by the Romanian cosmetic company Farmec that Maria is an official ambassador of the company, where she will participate in projects 

Question: Who is the mother of Queen Marie of Romania?
Answer: Grand Duchess Maria Alexandrovna of Russia.