On 26 May 1842 [his father] King Christian IX of Denmark 1818-1906 (age 24) and [his mother] Queen Louise Hesse-Kassel of Denmark (age 24) were married. She by marriage Queen Consort Denmark. He the son of Friedrich Wilhelm Glücksburg Duke Schleswig Holstein Sonderburg Glücksburg 1785-1831 and Louise Caroline Hesse-Kassel Duchess Schleswig Holstein Sonderburg Glücksburg (age 52). They were second cousins. He a great x 2 grandson of King George II of Great Britain and Ireland. She a great x 2 granddaughter of King George II of Great Britain and Ireland. 
On 24 Dec 1845 George I King Greece was born to King Christian IX of Denmark 1818-1906 (age 27) and Queen Louise Hesse-Kassel of Denmark (age 28). He a great x 3 grandson of King George II of Great Britain and Ireland. Coefficient of inbreeding 2.84%.
On 30 Mar 1863 George I King Greece (age 17) succeeded I King Greece.
On 15 Nov 1863 [his father] King Christian IX of Denmark 1818-1906 (age 45) succeeded IX King Denmark.
On 15 Oct 1867 George I King Greece (age 21) and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 16) were married. She by marriage Queen Consort Greece. He the son of King Christian IX of Denmark 1818-1906 (age 49) and Queen Louise Hesse-Kassel of Denmark (age 50). He a great x 3 grandson of King George II of Great Britain and Ireland. She a great x 5 granddaughter of King George I of Great Britain and Ireland.
On 02 Aug 1868 [his son] Constantine I King Greece was born to George I King Greece (age 22) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 16).
On 24 Jun 1869 [his son] George Glücksburg was born to George I King Greece (age 23) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 17).
In 1870 [his daughter] Alexandra Glücksburg was born to George I King Greece (age 24) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 18).
On 22 Jan 1872 [his son] Prince Nicholas Glücksburg was born to George I King Greece (age 26) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 20).
In 1876 George I King Greece (age 30) was appointed 766th Knight of the Garter by Queen Victoria of the United Kingdom (age 56).
In 1876 [his daughter] Maria Glücksburg was born to George I King Greece (age 30) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 24).
In 1880 [his daughter] Olga Glücksburg died.
In 1880 [his daughter] Olga Glücksburg was born to George I King Greece (age 34) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 28).
On 02 Feb 1882 [his son] Andrew Glücksburg was born to George I King Greece (age 36) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 30) at Old Royal Palace.
In 1888 [his son] Christopher Glücksburg was born to George I King Greece (age 42) and [his wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 36).
In 1889 [his son-in-law] Paul Holstein Gottorp Romanov (age 28) and [his daughter] Alexandra Glücksburg (age 19) were married. She the daughter of George I King Greece 1845-1913 (age 43) and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 37). They were first cousin once removed. He a great x 5 grandson of King George I of Great Britain and Ireland. She a great x 4 granddaughter of King George II of Great Britain and Ireland.
On 27 Oct 1889 [his son] Constantine I King Greece (age 21) and [his daughter-in-law] Sophia Hohenzollern Queen Consort Greece (age 19) were married. She the daughter of Frederick III King Prussia and Victoria Empress Germany Queen Consort Prussia (age 48). He the son of George I King Greece 1845-1913 (age 43) and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 38). They were half second cousin once removed. He a great x 4 grandson of King George II of Great Britain and Ireland. She a granddaughter of Queen Victoria of the United Kingdom.
In 1891 [his daughter] Alexandra Glücksburg (age 21) died.
On 29 Sep 1898 [his mother] Queen Louise Hesse-Kassel of Denmark (age 81) died.
On 29 Aug 1902 [his son] Prince Nicholas Glücksburg (age 30) and [his daughter-in-law] Elena Vladimirovna Holstein Gottorp Romanov (age 20) were married. He the son of George I King Greece 1845-1913 (age 56) and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 51). They were second cousins. He a great x 4 grandson of King George II of Great Britain and Ireland.
On 29 Jan 1906 [his father] King Christian IX of Denmark 1818-1906 (age 87) died. His son [his brother] Frederick VIII King Denmark 1843-1912 (age 62) succeeded VIII King Denmark. Louise of Sweden Queen Consort Denmark (age 54) by marriage Queen Consort Denmark.
On 21 Nov 1907 [his son] George Glücksburg (age 38) and [his daughter-in-law] Princess Marie Bonaparte (age 25) were married. He the son of George I King Greece 1845-1913 (age 61) and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 56). He a great x 4 grandson of King George II of Great Britain and Ireland.
On 18 Mar 1913 George I King Greece (age 67) died. His son [his son] Constantine I King Greece (age 44) succeeded I King Greece. [his daughter-in-law] Sophia Hohenzollern Queen Consort Greece (age 42) by marriage Queen Consort Greece.
On 18 Jun 1926 [his former wife] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece (age 74) died.
[his son] Andrew Glücksburg and Princess Alice of Battenburg were married. She the daughter of Prince Louis of Battenburg 1st Marquess Milford Haven 1854-1921 and Victoria Hesse Darmstadt Marchioness Milford Haven. He the son of George I King Greece 1845-1913 and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece. He a great x 4 grandson of King George II of Great Britain and Ireland. She a great granddaughter of Queen Victoria of the United Kingdom.
Paternal Family Tree: Oldenburg
Maternal Family Tree: Anna Schaunberg 1370-1396
Kings Wessex: Great x 24 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 21 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 27 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 22 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 3 Grand Son of King George II of Great Britain and Ireland
Kings Scotland: Great x 17 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 20 Grand Son of Louis VII King Franks
Kings France: Great x 14 Grand Son of Charles "Beloved Mad" VI King France
Great x 4 Grandfather: Frederick Louis Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 1653-1728 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Peter August Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 1697-1775 15 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Louise Charlotte Oldenburg Duchess Schleswig-Holstein-Sonderburg-Beck 14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck -1759 16 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 1 Grandfather: Friedrich Karl Ludwig Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 1757-1816 17 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Frederica Charlotte Dohna Schlodien Duchess Schleswig-Holstein-Sonderburg-Beck
GrandFather: Friedrich Wilhelm Glücksburg Duke Schleswig Holstein Sonderburg Glücksburg 1785-1831 18 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Friederike Schlieben Duchess Schleswig-Holstein-Sonderburg-Beck
Father: King Christian IX of Denmark 1818-1906 2 x Great Grand Son of King George II of Great Britain and Ireland
Great x 4 Grandfather: Charles I Landgrave Hesse-Kassel 1654-1730 12 x Great Grand Son of King Henry III of England
Great x 3 Grandfather: William Hesse-Kassel 1682-1760 13 x Great Grand Son of King Henry III of England
Great x 4 Grandmother: Maria Amalia of Courland Landgravine Hesse-Kassel 12 x Great Grand Daughter of King Henry III of England
Great x 2 Grandfather: Frederick Hesse-Kassel 14 x Great Grand Son of King Henry III of England
Great x 1 Grandfather: Charles Hesse-Kassel Grand Son of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George I of Great Britain and Ireland Great Grand Son of King James I of England and Ireland and VI of Scotland
Great x 3 Grandfather: King George II of Great Britain and Ireland Son of King George I of Great Britain and Ireland
Great x 4 Grandmother: Sophia Dorothea Hanover Queen Consort England
14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Mary Hanover Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: John Frederick Hohenzollern 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Caroline Hohenzollern Queen Consort England 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
GrandMother: Louise Caroline Hesse-Kassel Duchess Schleswig Holstein Sonderburg Glücksburg Great Grand Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: Frederick IV King Denmark and Norway 13 x Great Grand Son of King Henry III of England
Great x 3 Grandfather: Christian VI King Denmark and Norway 1699-1746 14 x Great Grand Son of King Henry III of England
Great x 4 Grandmother: Louise of Mecklenburg Güstrow Queen Consort Denmark and Norway 14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Frederick V King Denmark and Norway 1723-1766 15 x Great Grand Son of King Henry III of England
Great x 1 Grandmother: Louise Oldenburg Grand Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George I of Great Britain and Ireland Great Grand Son of King James I of England and Ireland and VI of Scotland
Great x 3 Grandfather: King George II of Great Britain and Ireland Son of King George I of Great Britain and Ireland
Great x 4 Grandmother: Sophia Dorothea Hanover Queen Consort England 14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Louise Hanover Queen Consort Denmark and Norway Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: John Frederick Hohenzollern 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Caroline Hohenzollern Queen Consort England 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
George I King Greece 1845-1913 3 x Great Grand Son of King George II of Great Britain and Ireland
Great x 4 Grandfather: Charles I Landgrave Hesse-Kassel 1654-1730 12 x Great Grand Son of King Henry III of England
Great x 3 Grandfather: William Hesse-Kassel 1682-1760 13 x Great Grand Son of King Henry III of England
Great x 4 Grandmother: Maria Amalia of Courland Landgravine Hesse-Kassel 12 x Great Grand Daughter of King Henry III of England
Great x 2 Grandfather: Frederick Hesse-Kassel 14 x Great Grand Son of King Henry III of England
Great x 1 Grandfather: Frederick Hesse-Kassel Grand Son of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George I of Great Britain and Ireland Great Grand Son of King James I of England and Ireland and VI of Scotland
Great x 3 Grandfather: King George II of Great Britain and Ireland Son of King George I of Great Britain and Ireland
Great x 4 Grandmother: Sophia Dorothea Hanover Queen Consort England 14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Mary Hanover Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: John Frederick Hohenzollern 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Caroline Hohenzollern Queen Consort England 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
GrandFather: William Hesse-Kassel Great Grand Son of King George II of Great Britain and Ireland
Mother: Queen Louise Hesse-Kassel of Denmark 2 x Great Grand Daughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: Frederick IV King Denmark and Norway 13 x Great Grand Son of King Henry III of England
Great x 3 Grandfather: Christian VI King Denmark and Norway 1699-1746 14 x Great Grand Son of King Henry III of England
Great x 4 Grandmother: Louise of Mecklenburg Güstrow Queen Consort Denmark and Norway 14 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Frederick V King Denmark and Norway 1723-1766 15 x Great Grand Son of King Henry III of England
Great x 1 Grandfather: Prince Frederick Oldenburg 16 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Ferdinand Albert I Duke of Brunswick-Wolfenbüttel-Bevern 13 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Ferdinand Albert II Duke of Brunswick-Wolfenbüttel 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Juliana Maria Welf Queen Consort Denmark and Norway 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Louis Rudolph 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Princess Antoinette of Brunswick-Wolfenbüttel 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
GrandMother: Princess Charlotte of Denmark 17 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Frederick I Duke of Mecklenburg Grabow 13 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Christian Ludwig II Duke of Mecklenburg-Schwerin 1683-1756 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Duke Louis of Mecklenburg-Schwerin 15 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Duchess Sophia Frederica of Mecklenburg-Schwerin 16 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: John Ernest Saxe Coburg Saalfeld IV Duke Saxe Coburg Saalfeld 1658-1729 14 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Francis Josias Saxe Coburg Saalfeld Duke Saxe Coburg Saalfeld 15 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Charlotte Johanna Waldeck Wildungen Duchess Saxe Coburg Saalfeld
Great x 2 Grandmother: Charlotte Sophie Saxe Coburg Saalfeld 16 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Prince Louis Frederick I of Schwarzburg-Rudolstadt
Great x 3 Grandmother: Duchess Anna Sophie Of Saxe-Coburg-Saalfeld 16 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Anna Sophie Saxe Coburg Altenburg 15 x Great Grand Daughter of King Henry "Curtmantle" II of England
