Maria's siblings were Grand Duchess Olga of Russia, Grand Duchess Tatiana of Russia, Grand Duchess Anastasia of Russia, and Tsarevich Alexei of Russia. Maria's Russian title ( Velikaya Knyazhna Великая Княжна) is most precisely translated as "Grand Princess", meaning that Maria, as an "Imperial Highness" was higher in rank than other Princesses in Europe who were "Royal Highnesses".
Grand Duchess Maria Alexandrovna of Russia (Russian: Мария Александровна; 17 October [O.S. 5 October] 1853 – 24 October 1920) was the fifth child and only surviving daughter of Emperor Alexander II of Russia and Princess Marie of Hesse and by Rhine; she was Duchess of Edinburgh and later Duchess of Saxe-Coburg and Gotha as the wife of Alfred, Duke of Saxe-Coburg and Gotha.
Grand Duchess Maria Pavlovna Romanova of Russia was born on 16 February 1786 in Saint Petersburg as the fifth child and third daughter of Tsesarevich Paul Petrovich of Russia and his second wife, Tsesarevna Maria Feodorovna (1754–1801), born Duchess Sophie Dorothea of Württemberg (1759–1828). She was named after her mother.
Grand Duchess Anastasia Nikolaevna of Russia (Russian: Анастасия Николаевна Романова, romanized: Anastasiya Nikolaevna Romanova; 18 June [O.S. 5 June] 1901 – 17 July 1918) was the youngest daughter of Tsar Nicholas II, the last sovereign of Imperial Russia, and his wife, Tsarina Alexandra Feodorovna.
Grand Duchess Maria Pavlovna was born 18 April [O.S. 6 April] 1890 in Saint Petersburg.She was the first child and only daughter of Grand Duke Paul Alexandrovich of Russia and his first wife, Grand Duchess Alexandra Georgievna of Russia, born Princess Alexandra of Greece and Denmark.
She was the elder daughter among the six children of the Tsesarevich Alexander and his wife, Grand Duchess Maria Feodorovna of Russia (née Princess Dagmar of Denmark). After the assassination of her paternal grandfather Tsar Alexander II of Russia (13 March [ O.S. 1 March] 1881), when Xenia was five years old, her father ascended to the Russian throne as Emperor Alexander III.
Grand Duchess Anastasia Mikhailovna and her husband, Friedrich Franz III, Grand Duke of Mecklenburg-Schwerin, had three children: Duchess Alexandrine of Mecklenburg-Schwerin (24 December 1879 – 28 December 1952), who married King Christian X of Denmark on 26 April 1898. They had two sons.