George I of Greece
George I (Greek:
Γεώργιος Α΄, Geórgios I; 24 December 1845 – 18 March 1913) was King of Greece from 1863 until his assassination in 1913.
Originally a Danish prince, he was born in Copenhagen, and seemed destined for a career in the Royal Danish Navy.
He was only 17 years old when he was elected king by the Greek National Assembly, which had deposed the unpopular former king Otto.
His nomination was both suggested and supported by the Great Powers: the United Kingdom of Great Britain and Ireland, the Second French Empire and the Russian Empire.
He married the Russian grand duchess Olga Constantinovna of Russia in 1867, and became the first monarch of a new Greek dynasty.
Two of his sisters, Alexandra and Dagmar, married into the British and Russian royal families.
King Edward VII and Tsar Alexander III were his brothers-in-law, and King George V, Tsar Nicholas II, King Christian X of Denmark and King Haakon VII of Norway were his nephews.
George's reign of almost 50 years (the longest in modern Greek history) was characterized by territorial gains as Greece established its place in pre-World War
I Europe.
Britain ceded the Ionian Islands peacefully in 1864, while Thessaly was annexed from the Ottoman Empire after the Russo-Turkish War (1877–1878).
Greece was not always successful in its territorial ambitions; it was defeated in the Greco-Turkish War (1897).
During the First Balkan War, after Greek troops had captured much of Greek Macedonia, George was assassinated in Thessaloniki.
Compared with his own long tenure, the reigns of his successors Constantine, Alexander, and George II proved short and insecure.
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Princess Nina Georgievna of Russia
Princess Nina Georgievna of Russia,( 20 June 1901 – 27 February 1974), was the elder daughter of Grand Duke George Mikhailovich and Grand Duchess Maria Georgievna of Russia.
A great- granddaughter of Tsar Nicholas I of Russia, she left her native country in 1914, before World War I finished her education in England and spent the rest of her life in exile.
In London in 1922, she married Prince Paul Chavchavadze, a descendant of the last king of Georgia.
They had one child, Prince David Chavchavadze, born there two years later.
In 1927 the family of three moved to the United States and settled in New York.
In 1939 they bought a home in Wellfleet, Massachusetts.
Princess Nina was an artist, her husband worked as an author; he wrote five books and translated several others.
Their son, Prince David Chavchavadze, served with the U.S. Army during World War II and, thanks in part to his knowledge of Russian, eventually became a CIA officer.
After his retirement, he wrote his memoirs and published those of his grandmother, Grand Duchess George, as well as a book about the grand dukes of Russia.
Grand Duchess Alexandra Nikolaevna of Russia
Grand Duchess Alexandra Nikolaevna of Russia( 24 June 1825 – 10 August 1844) was the youngest daughter and fourth child of Tsar Nicholas I, Emperor of Russia, and his wife, Princess Charlotte of Prussia.
She was a younger sister of Tsar Alexander II of Russia.
Grand Duchess Alexandra Alexandrovna of Russia
Grand Duchess Alexandra Alexandrovna of Russia( 30 August 1842 – 10 July 1849) was the eldest child and first daughter of Tsar Alexander II of Russia and his first wife Marie of Hesse and by Rhine.
She died from infant meningitis at the age of six and a half.
Princess Alexandra of Greece and Denmark
Grand Duchess Alexandra Georgievna of Russia ("née" Princess Alexandra of Greece and Denmark ; 30 August 1870 – 24 September 1891) was the third child and firstborn daughter of King George I and Queen Olga of Greece, who herself was a daughter of a Russian grand duke, and was also a grandchild of Denmark's King Christian IX and Queen Louise.
She was a sister to Constantine I of Greece, and thus aunt of three kings and two queens, Constantine's three sons, who all became kings of Greece, and two of his daughters, who were queens, of Romania and (titularly) Croatia, respectively.
She was also first cousin of Tsar Nicholas II of Russia, King George V of the United Kingdom, King Christian X of Denmark, and both King Haakon VII and Queen Maud of Norway, as well as a paternal aunt of Prince Philip, Duke of Edinburgh.
Duchess Alexandra of Oldenburg
Grand Duchess Alexandra Petrovna of Russia( tr.; Born Duchess Alexandra Frederica Wilhelmina of Oldenburg; 2 June 1838 – 25 April 1900) was a great- granddaughter of Emperor Paul I of Russia and the wife of Grand Duke Nicholas Nikolaevich of Russia, the elder.
Born Duchess Alexandra of Oldenburg, she was the eldest daughter of Duke Peter of Oldenburg and his wife Princess Therese of Nassau- Weilburg.
She grew up in Russia in close proximity to the Romanovs as her father was a nephew of Tsar Nicholas I of Russia.
Alexandra ’s parents were artistically gifted and passionate philanthropists.
They provided a good education for her and inspired in Alexandra a life of service to those in need.
Alexandra married in 1856, Grand Duke Nicholas Nikolaevich of Russia, the third son of TsarNicholas I and her first cousin once removed.
Alexandra, who had been raised in the Lutheran church, converted to the Orthodox faith, and took the name Grand Duchess Alexandra Petrovna of Russia.
The couple had two children: Grand Duke Nicholas Nikolaevich of Russia( 1856 – 1929), the younger, and Grand Duke Peter Nikolaevich of Russia( 1864 – 1931).
The marriage, arranged by the Russian Imperial family in an attempt to control the Grand Duke ’s excesses, was unhappy.
She was plain, serious and liked simplicity.
Deeply religious and very involved in charity work, Alexandra founded a training institute for nurses in St Petersburg in 1865.
The same year, her husband began an affair with a ballerina, forming a second family with his mistress.
After the collapse of her marriage, Alexandra lived separated from her husband who expelled her from their household in 1879.
A carriage accident left her almost completely paralyzed and, in November 1880, Alexandra went abroad to improve her health, compelled by her brother- in- law Tsar Alexander II.
The following year, she asked her nephew, Tsar Alexander III, to allow her to return to Russia and she settled in Kiev.
She recovered her mobility and, in 1889, she founded the Pokrov of Our Lady Monastery, a convent of nursing nuns with its own hospital, to provide free treatment for the poor.
She dedicated the rest of her life to the work at the hospital.
In 1889, she became an Orthodox nun under the name Anastasia.
She died at the convent in 1900.
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.
Grand Duke Nicholas Konstantinovich of Russia
Grand Duke Nicholas Constantinovich of Russia( 14 February 1850 – 26 January 1918) was the first- born son of Grand Duke Konstantin Nikolayevich and Grand Duchess Alexandra Iosifovna of Russia and a grandson of Nicholas I of Russia.
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.

Question: Where was the place of death of Princess Alexandra Of Greece And Denmark's father?
Answer: Thessaloniki