On 24 Oct 1636 [his father] Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 (age 34) and [his mother] Elisabeth Sophie Saxe Altenburg Duchess Saxe Gotha 1619-1680 (age 17) were married at Altenburg. She by marriage Duchess Saxe Gotha. She the daughter of Johann Philipp Wettin Duke Saxe Altenburg 1597-1639 (age 39) and Elisabeth of Brunswick-Wolfenbüttel Duchess of Saxe-Altenburg (age 43). He the son of Johann Wettin II Duke Saxe Weimar 1570-1605 and Dorothea Maria Anhalt. They were first cousin once removed.
On 20 Dec 1644 [his uncle] Albert IV Wettin IV Duke Saxe Weimar 1599-1644 (age 45) died at Eisenach. His brother [his father] Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 (age 42) succeeded I Duke Saxe Gotha.
On 15 Jul 1646 Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg was born to Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 (age 44) and Elisabeth Sophie Saxe Altenburg Duchess Saxe Gotha 1619-1680 (age 26) at Gotha. Coefficient of inbreeding 3.17%.
On 14 Nov 1669 Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 23) and Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 21) were married at Halle, Saxony-Anhalt. He the son of Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 (age 67) and Elisabeth Sophie Saxe Altenburg Duchess Saxe Gotha 1619-1680 (age 50). They were fourth cousins.
On 22 Dec 1670 [his daughter] Anna Sophie Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 24) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 22) at Gotha.
On 30 Sep 1671 [his daughter] Magdalene Sibylle Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 25) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 23) at Gotha.
On 25 Oct 1671 [his brother-in-law] Johann Adolph I Duke Saxe Weissenfels (age 21) and Johanna Magdalena of Saxe-Altenburg (age 15) were married. She the daughter of Friedrich Wilhelm Wettin II Duke Saxe Altenburg 1603-1669. They were fourth cousins.
On 02 Mar 1673 [his daughter] Magdalene Sibylle Saxe Coburg Altenburg (age 1) died at Altenburg.
On 22 Jan 1674 [his daughter] Dorothea Marie Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 27) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 25) at Gotha.
In 1675 Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 28) succeeded I Duke Saxe Gotha Altenburg. [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 26) by marriage Duchess Saxe Gotha Altenburg.
On 24 Mar 1675 [his daughter] Fredericka Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 28) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 26) at Gotha.
On 26 Mar 1675 [his father] Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 (age 73) died at Friedenstein Palace, Gotha.
On 28 Jul 1676 [his son] Frederick Saxe Coburg Altenburg II Duke Saxe Gotha Altenburg 1676-1732 was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 30) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 27) at Gotha.
On 04 Oct 1677 [his son] Johann Wilhelm Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 31) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 29) at Gotha.
On 07 Feb 1679 [his daughter] Elisabeth Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 32) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 30) at Gotha.
On 22 Jun 1680 [his daughter] Elisabeth Saxe Coburg Altenburg (age 1) died of smallpox at Gotha.
On 01 Oct 1680 [his daughter] Johanna Saxe Coburg Altenburg was born to Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 34) and [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 32) at Gotha.
On 20 Dec 1680 [his mother] Elisabeth Sophie Saxe Altenburg Duchess Saxe Gotha 1619-1680 (age 61) died.
On 07 Jan 1681 [his wife] Duchess Magdalena Sibylle of Saxe Gotha Altenburg 1648-1681 (age 32) died.
On 02 Aug 1691 Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg (age 45) died at Friedrichswerth, Gotha. His son [his son] Frederick Saxe Coburg Altenburg II Duke Saxe Gotha Altenburg 1676-1732 (age 15) succeeded II Duke Saxe Gotha Altenburg.
Paternal Family Tree: Wettin
Maternal Family Tree: Sophie Mecklenburg-Schwerin Queen Consort Denmark 1557-1631
Kings Wessex: Great x 19 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 24 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 19 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 10 Grand Son of King Edward III of England
Kings Scotland: Great x 17 Grand Son of Malcolm III King Scotland
Kings Franks: Great x 14 Grand Son of Louis VII King Franks
Kings France: Great x 12 Grand Son of Louis "Lion" VIII King France
King George III of Great Britain and Ireland x 1
Caroline Matilda Hanover Queen Consort Denmark and Norway 1751-1775 x 1
King George IV of Great Britain and Ireland x 1
King William IV of the United Kingdom x 1
Frederick VI King Denmark and Norway 1768-1839 x 1
Caroline of Brunswick Queen Consort England x 1
Ernest Augustus King Hanover x 1
King Christian I of Norway and VIII of Denmark x 1
Caroline Amalie Oldenburg Queen Norway 1796-1881 x 1
Frederick VII King Denmark 1808-1863 x 3
Queen Louise Hesse-Kassel of Denmark 1817-1898 x 1
Queen Victoria of the United Kingdom x 2
George V King Hanover 1819-1878 x 1
Victoria Empress Germany Queen Consort Prussia x 6
King Edward VII of the United Kingdom x 6
Frederick VIII King Denmark 1843-1912 x 1
Alexandra Glücksburg Queen Consort England x 1
George I King Greece 1845-1913 x 1
Gustav V King Sweden 1858-1950 x 1
George V King United Kingdom x 7
Victoria Mary Teck Queen Consort England x 1
Frederick Charles I King Finland 1868-1940 x 1
Maud Windsor Queen Consort Norway x 7
Christian X King Denmark 1870-1947 x 1
Alexandrine Mecklenburg-Schwerin Queen Consort Denmark 1879-1952 x 2
Gustaf Adolph VI King Sweden 1882-1973 x 1
Victoria Eugénie Mountbatten Queen Consort Spain 1887-1969 x 6
Louise Mountbatten Queen Consort Sweden x 6
Alexander I King Greece 1893-1920 x 7
King Edward VIII of the United Kingdom x 8
King George VI of the United Kingdom x 8
Paul I King Greece 1901-1964 x 7
Olav Glücksburg V King Norway 1903-1991 x 8
Ingrid Bernadotte Queen Consort Denmark 1910-2000 x 7
Philip Mountbatten Duke Edinburgh x 7
Queen Elizabeth II of the United Kingdom x 8
Sophia Glücksburg Queen Consort Spain 1938- x 16
Juan Carlos I King Spain 1938- x 6
Constantine II King Hellenes 1940- x 16
Carl XVI King Sweden 1946- x 14
King Charles III x 15
Great x 4 Grandfather: Ernest Elector Saxony 8 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Johann Elector Saxony 9 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Elisabeth Wittelsbach Electress of Saxony
8 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Johann Frederick I Duke Saxony 10 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Magnus II Duke of Mecklenburg
Great x 3 Grandmother: Sophie of Mecklenburg
Great x 1 Grandfather: Johann Wilhelm Wettin Duke Saxe Weimar 1530-1573 11 x Great Grand Son of King Henry "Curtmantle" II of England
GrandFather: Johann Wettin II Duke Saxe Weimar 1570-1605 12 x Great Grand Son of King Henry "Curtmantle" II of England
Father: Ernest "The Pious" Saxe Gotha I Duke Saxe Gotha 1601-1675 13 x Great Grand Son of King Henry "Curtmantle" II of England
GrandMother: Dorothea Maria Anhalt
Frederick Saxe Coburg Altenburg I Duke Saxe Gotha Altenburg 1646-1691 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Johann Elector Saxony 9 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Johann Frederick I Duke Saxony 10 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Sophie of Mecklenburg
Great x 2 Grandfather: Johann Wilhelm Wettin Duke Saxe Weimar 1530-1573 11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 1 Grandfather: Friedrich Wilhelm Wettin I Duke Saxe Weimar 1562-1602 12 x Great Grand Son of King Henry "Curtmantle" II of England
GrandFather: Johann Philipp Wettin Duke Saxe Altenburg 1597-1639 8 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Louis II Count Palatine of Zweibrücken 10 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Wolfgang Count Palatine of Zweibrücken 11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Elisabeth of Hesse 10 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Philipp Ludwig Count Palatine of Neuburg 11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Landgrave Philip I of Hesse 1504-1567 10 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Anna of Hesse aka Cleves 10 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Christine of Saxony 9 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 1 Grandmother: Anna Maria Countess Palatine of Neuburg 7 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: John La Marck III Duke Cleves 1490-1538 7 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: William La Marck Duke of Jülich Cleves Berg 1516-1592 8 x Great Grand Son of King Edward "Longshanks" I of England
Great x 2 Grandmother: Anna of Cleves 6 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Ferdinand I Holy Roman Emperor 4 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Maria Habsburg Spain Duchess Cleves 1531-1581 5 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Anne Jagiellon Holy Roman Empress 8 x Great Grand Daughter of King Edward "Longshanks" I of England
Mother: Elisabeth Sophie Saxe Altenburg Duchess Saxe Gotha 1619-1680 9 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Henry Julius Duke of Brunswick-Lüneburg
GrandMother: Elisabeth of Brunswick-Wolfenbüttel Duchess of Saxe-Altenburg 13 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: King Frederick I of Denmark
Great x 3 Grandfather: Christian III King Denmark 1503-1559 10 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Anna of Brandenburg 9 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandfather: Frederick II King Denmark 1534-1588 11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Dorothea of Saxe Lauenburg Queen Consort Denmark and Norway
Great x 1 Grandmother: Elizabeth Oldenburg 12 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Albrecht VII Duke Mecklenburg
Great x 3 Grandfather: Ulrich Mecklenburg-Schwerin 11 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Anna Hohenzollern Duchess Mecklenburg 10 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Sophie Mecklenburg-Schwerin Queen Consort Denmark 1557-1631 12 x Great Grand Daughter of King Henry "Curtmantle" II of England