Paternal Family Tree: Oldenburg
On 15th October 1867 [his father] George I King Greece [aged 21] and [his mother] Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece [aged 16] were married. She by marriage Queen Consort Greece. He the son of [his grandfather] King Christian IX of Denmark [aged 49] and [his grandmother] Queen Louise Hesse-Kassel of Denmark [aged 50]. They were fifth cousin once removed. He a great x 3 grandson of King George II of Great Britain and Ireland.
On 2nd August 1868 Constantine I King Greece was born to George I King Greece [aged 22] and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece [aged 16]. He a great x 4 grandson of King George II of Great Britain and Ireland.
On 27th October 1889 Constantine I King Greece [aged 21] and Sophia Hohenzollern Queen Consort Greece [aged 19] were married. She the daughter of Frederick III King Prussia and Victoria Empress Germany Queen Consort Prussia [aged 48]. He the son of George I King Greece [aged 43] and Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece [aged 38]. They were 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.
On 20th July 1890 [his son] George II King Hellenes was born to Constantine I King Greece [aged 21] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 20]. He a great grandson of Queen Victoria of the United Kingdom. He married 27th February 1921 his second cousin Elisabeth Hohenzollern Sigmaringen Queen Consort Greece Queen Consort Hellenes.
On 1st August 1893 [his son] Alexander I King Greece was born to Constantine I King Greece [aged 24] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 23]. He a great grandson of Queen Victoria of the United Kingdom. He married Aspasia Manos Queen Consort Greece.
On 2nd May 1896 [his daughter] Helen Glücksburg was born to Constantine I King Greece [aged 27] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 25]. She a great granddaughter of Queen Victoria of the United Kingdom. She married 10th March 1921 her second cousin King Carol II Hohenzollern Sigmaringen and had issue.
On 14th December 1901 [his son] Paul I King Greece was born to Constantine I King Greece [aged 33] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 31]. He a great grandson of Queen Victoria of the United Kingdom. He married 1938 his first cousin once removed Frederica Hanover Queen Consort Greece, daughter of Ernest Augustus Hanover Duke Brunswick and Viktoria Luise Hohenzollern Duchess Brunswick, and had issue.
On 13th February 1904 [his son] Princess Irene Glücksburg was born to Constantine I King Greece [aged 35] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 33]. He a great grandson of Queen Victoria of the United Kingdom.
On 18th March 1913 [his father] George I King Greece [aged 67] died. His son Constantine [aged 44] succeeded I King Greece. [his wife] Sophia Hohenzollern Queen Consort Greece [aged 42] by marriage Queen Consort Greece.
On 4th May 1913 [his son] Katherine Glücksburg was born to Constantine I King Greece [aged 44] and [his wife] Sophia Hohenzollern Queen Consort Greece [aged 42]. He a great grandson of Queen Victoria of the United Kingdom.
Annals of the six Kings of England by Nicholas Trivet
Translation of the Annals of the Six Kings of England by that traces the rise and rule of the Angevin aka Plantagenet dynasty from the mid-12th to early 14th century. Written by the Dominican scholar Nicholas Trivet, the work offers a vivid account of English history from the reign of King Stephen through to the death of King Edward I, blending political narrative with moral reflection. Covering the reigns of six monarchs—from Stephen to Edward I—the chronicle explores royal authority, rebellion, war, and the shifting balance between crown, church, and nobility. Trivet provides detailed insight into defining moments such as baronial conflicts, Anglo-French rivalry, and the consolidation of royal power under Edward I, whose reign he describes with particular immediacy. The Annals combines careful year-by-year reporting with thoughtful interpretation, presenting history not merely as a sequence of events but as a moral and political lesson. Ideal for readers interested in medieval history, kingship, and the origins of the English state, this chronicle remains a valuable and accessible window into the turbulent world of the Plantagenet kings.
Available at Amazon in eBook and Paperback format.
April 1914. Philip de László [aged 44]. Portrait of Constantine I King Greece [aged 45].
On 11th June 1917 Constantine I King Greece [aged 48] abdicated King Greece. [his son] Alexander I King Greece [aged 23] succeeded I King Greece. Aspasia Manos Queen Consort Greece by marriage Queen Consort Greece.
On 25th October 1920 [his son] Alexander I King Greece [aged 27] died. His brother Paul [aged 18] succeeded I King Greece.
On 27th February 1921 George II King Hellenes [aged 30] and Elisabeth Hohenzollern Sigmaringen Queen Consort Greece Queen Consort Hellenes [aged 26] were married at Bucharest. He the son of Constantine I King Greece [aged 52] and Sophia Hohenzollern Queen Consort Greece [aged 50]. They were second cousins. He a great grandson of Queen Victoria of the United Kingdom. She a great granddaughter of Queen Victoria of the United Kingdom.
On 10th March 1921 [his son-in-law] King Carol II Hohenzollern Sigmaringen [aged 27] and Helen Glücksburg [aged 24] were married at Athens. She the daughter of Constantine I King Greece [aged 52] and Sophia Hohenzollern Queen Consort Greece [aged 50]. They were second cousins. He a great grandson of Queen Victoria of the United Kingdom. She a great granddaughter of Queen Victoria of the United Kingdom.
On 27th September 1922 Constantine I King Greece [aged 54] abdicated King Greece. [his son] Alexander I King Greece succeeded I King Greece. George II King Hellenes [aged 32] succeeded II King Hellenes. Elisabeth Hohenzollern Sigmaringen Queen Consort Greece Queen Consort Hellenes [aged 27] by marriage Queen Consort Hellenes.
On 9th November 1922 [his brother-in-law] Wilhelm Hohenzollern [aged 63] and Hermine Reuss [aged 34] were married. The difference in their ages was 28 years. He the son of Frederick III King Prussia and [his mother-in-law] Victoria Empress Germany Queen Consort Prussia.
On 11th January 1923 Constantine I King Greece [aged 54] died.
On 13th January 1932 [his former wife] Sophia Hohenzollern Queen Consort Greece [aged 61] died.
Kings Wessex: Great x 25 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 22 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 28 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 23 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 24 Grand Son of King Harold II of England
Kings England: Great x 4 Grand Son of King George II of Great Britain and Ireland
Kings Scotland: Great x 8 Grand Son of King James I of England and Ireland and VI of Scotland
Kings France: Great x 15 Grand Son of King Charles V of France
Kings Duke Aquitaine: Great x 29 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 13 Grand Son of John II King Aragon
Great x 4 Grandfather: Peter August Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 
13 x Great Grandson of King Philip III of France
Great x 3 Grandfather: Karl Anton Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 14 x Great Grandson of King Philip III of France
Great x 4 Grandmother: Sophie of Hesse-Philippsthal Duchess Schleswig-Holstein-Sonderburg-Beck
Great x 2 Grandfather: Friedrich Karl Ludwig Oldenburg I Duke Schleswig-Holstein-Sonderburg-Beck 15 x Great Grandson of King Philip III of France
Great x 3 Grandmother: Frederica Charlotte Dohna Schlodien Duchess Schleswig-Holstein-Sonderburg-Beck
Great x 1 Grandfather: Friedrich Wilhelm Glücksburg Duke Schleswig Holstein Sonderburg Glücksburg 16 x Great Grandson of King Philip III of France
Great x 2 Grandmother: Friederike Schlieben Duchess Schleswig-Holstein-Sonderburg-Beck
Grandfather: King Christian IX of Denmark 2 x Great Grandson of King George II of Great Britain and Ireland
Great x 4 Grandfather: William Hesse-Kassel 7 x Great Grandson of John II King Aragon
Great x 3 Grandfather: Frederick Hesse-Kassel 8 x Great Grandson of John II King Aragon
Great x 2 Grandfather: Charles Hesse-Kassel Grandson of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George II of Great Britain and Ireland 2 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 3 Grandmother: Mary Hanover daughter of King George II of Great Britain and Ireland
Great x 4 Grandmother: Caroline Hohenzollern Queen Consort England 13 x Great Granddaughter of King Philip III of France
Great x 1 Grandmother: Louise Caroline Hesse-Kassel Duchess Schleswig Holstein Sonderburg Glücksburg Great Granddaughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: Christian VI King of Denmark and Norway 8 x Great Grandson of John II King Aragon
Great x 3 Grandfather: Frederick V King of Denmark and Norway 9 x Great Grandson of John II King Aragon
Great x 2 Grandmother: Louise Oldenburg Granddaughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George II of Great Britain and Ireland 2 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 3 Grandmother: Louise Hanover Queen Consort Denmark and Norway daughter of King George II of Great Britain and Ireland
Great x 4 Grandmother: Caroline Hohenzollern Queen Consort England 13 x Great Granddaughter of King Philip III of France
father: George I King Greece 3 x Great Grandson of King George II of Great Britain and Ireland
Great x 4 Grandfather: William Hesse-Kassel 7 x Great Grandson of John II King Aragon
Great x 3 Grandfather: Frederick Hesse-Kassel 8 x Great Grandson of John II King Aragon
Great x 2 Grandfather: Frederick Hesse-Kassel Grandson of King George II of Great Britain and Ireland
Great x 4 Grandfather: King George II of Great Britain and Ireland 2 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 3 Grandmother: Mary Hanover daughter of King George II of Great Britain and Ireland
Great x 4 Grandmother: Caroline Hohenzollern Queen Consort England 13 x Great Granddaughter of King Philip III of France
Great x 1 Grandfather: William Hesse-Kassel Great Grandson of King George II of Great Britain and Ireland
Grandmother: Queen Louise Hesse-Kassel of Denmark 2 x Great Granddaughter of King George II of Great Britain and Ireland
Great x 4 Grandfather: Christian VI King of Denmark and Norway 8 x Great Grandson of John II King Aragon
Great x 3 Grandfather: Frederick V King of Denmark and Norway 9 x Great Grandson of John II King Aragon
Great x 2 Grandfather: Prince Frederick Oldenburg 10 x Great Grandson of John II King Aragon
Great x 4 Grandfather: Ferdinand Albert II Duke of Brunswick-Wolfenbüttel 14 x Great Grandson of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Juliana Maria Welf Queen Consort Denmark and Norway 15 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Princess Antoinette of Brunswick-Wolfenbüttel 15 x Great Granddaughter of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Princess Charlotte of Denmark 11 x Great Granddaughter of John II King Aragon
Great x 4 Grandfather: Christian Ludwig II Duke of Mecklenburg-Schwerin 12 x Great Grandson of King Philip III of France
Great x 3 Grandfather: Duke Louis of Mecklenburg-Schwerin 13 x Great Grandson of King Philip III of France
Great x 2 Grandmother: Duchess Sophia Frederica of Mecklenburg-Schwerin 10 x Great Granddaughter of John II King Aragon
Great x 4 Grandfather: Francis Josias Saxe Coburg Saalfeld Duke Saxe Coburg Saalfeld 8 x Great Grandson of John II King Aragon
Great x 3 Grandmother: Charlotte Sophie Saxe Coburg Saalfeld 9 x Great Granddaughter of John II King Aragon
Great x 4 Grandmother: Duchess Anna Sophie Of Saxe-Coburg-Saalfeld 8 x Great Granddaughter of John II King Aragon
Constantine I King Greece 4 x Great Grandson of King George II of Great Britain and Ireland
Great x 4 Grandfather: Charles Frederick Duke of Holstein Gottorp 8 x Great Grandson of John II King Aragon
Great x 3 Grandfather: Peter III of Russia 9 x Great Grandson of John II King Aragon
Great x 2 Grandfather: Paul Emperor of Russia 10 x Great Grandson of John II King Aragon
Great x 1 Grandfather: Tsar Nicholas I of Russia 6 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Charles Alexander Duke of Württemberg 12 x Great Grandson of King Philip III of France
Great x 3 Grandfather: Frederick Eugene Duke Württemberg 13 x Great Grandson of King Philip III of France
Great x 2 Grandmother: Empress Sophie Dorothea of Russia 5 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Friedrich Wilhelm Hohenzollern 8 x Great Grandson of John II King Aragon
Great x 3 Grandmother: Friederike Sophie Dorothea Hohenzollern 4 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandmother: Sophia Dorothea Hohenzollern 3 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Grandfather: Konstantin Nikolayevich Holstein Gottorp Romanov 7 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Augustus William Hohenzollern 3 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 3 Grandfather: Frederick William II King Prussia 4 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 2 Grandfather: Frederick William III King Prussia 5 x Great Grandson of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Landgrave Louis IX of Hesse-Darmstadt 9 x Great Grandson of John II King Aragon
Great x 3 Grandmother: Queen Frederica Louisa of Prussia 10 x Great Granddaughter of John II King Aragon
Great x 4 Grandmother: Countess Palatine Caroline of Zweibrücken
Great x 1 Grandmother: Charlotte Hohenzollern 6 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Charles Louis Frederick Duke of Mecklenburg 12 x Great Grandson of King Philip III of France
Great x 3 Grandfather: Grand Duke Charles II of Mecklenburg Strelitz 10 x Great Grandson of John II King Aragon
Great x 4 Grandmother: Princess Elisabeth Albertine of Saxe-Hildburghausen 9 x Great Granddaughter of John II King Aragon
Great x 2 Grandmother: Queen Louise of Prussia 11 x Great Granddaughter of John II King Aragon
Great x 4 Grandfather: Prince George William of Hesse-Darmstadt 9 x Great Grandson of John II King Aragon
Great x 3 Grandmother: Princess Friederike of Hesse-Darmstadt 10 x Great Granddaughter of John II King Aragon
Great x 4 Grandmother: Countess Maria Louise Albertine of Leiningen-Dagsburg-Falkenburg
mother: Olga Constantinovna Holstein Gottorp Romanov Queen Consort Greece 8 x Great Granddaughter of King James I of England and Ireland and VI of Scotland