The Senior Line of the House of Wettin
Johann Frederick I (1503 – 1554) Duke of Saxony
- Johann Frederick I (1503 – 1554) Elector of Saxony from 1532 – 1547 and Duke of Saxony from 1547 – 1554. Married Sibylle of Cleves (1512 – 1554) daughter of John III the Peaceful, Duke of Cleves and Count of Mark. Deprived of his Electorate by the Emperor Charles V. See Early Saxony
In 1554, John Frederick I split the duchy between his three sons:
- John Frederick II (1529–1556) Duke of Saxe-Eisenach and Saxe-Coburg
- John William (1530–1573) Duke of Saxe-Weimar
- John Frederick III (1538–1565) Duke of Saxe-Gotha
Division of Erfurt
In 1572 the Ernestine duchies were rearranged and redivided between the two sons of John Frederick II and the son of John William.
Dukes of Saxe-Eisenach and Saxe-Coburg
1554-1638
Lands divided between Saxe-Weimar and Saxe-Altenburg
John Frederick II (1529–1556) Duke of Saxe-Eisenach and Saxe-Coburg
- John Frederick II (1529–1556) Duke of Saxe-Eisenach and Saxe-Coburg. Married firstly Agnes of Hesse (1527 – 1555) daughter of Philip, Landgrave of Hesse and secondly Elisabeth of the Palatinate (1540 – 1594) daughter of Frederick III, Elector Palatine.
Johann Casimir (1564- 1633) Duke of Saxe-Coburg
- Johann Casimir (1564- 1633) Duke of Saxe-Coburg. Married firstly Anna of Saxony (1567 - 1613) daughter of Augustus, Elector of Saxony (divorced 1593) and secondly Margaret of Brunswick-Lüneburg (1573 – 1643) daughter of William, Duke of Brunswick-Lüneburg.
Johann Ernst (1566 - 1638) Duke of Saxe-Eisenach and later of Saxe-Coburg
- Johann Ernst (1566 - 1638) Duke of Saxe-Eisenach and later of Saxe-Coburg. Married firstly Elisabeth of Mansfeld-Hinterort (1565 – 1596) daughter of John, Count of Mansfeld-Hinterort and secondly Christine of Hesse-Kassel (1578 – 1658) daughter of William IV, Landgrave of Hesse-Kassel.
Senior Line of John Frederick II extinct in 1638. Saxe-Coburg-Eisenach was divided (under the rules of the Ernestine line) between Saxe-Weimar and Saxe-Altenburg.
Dukes of Saxe-Weimar
1554-1602
John William (1530–1573) Duke of Saxe-Weimar
- John William (1530–1573) Duke of Saxe-Weimar. Married Dorothea Susanne of Simmern (1544 – 1592) daughter of Frederick III, Elector Palatine
Frederick Wilhelm I (1562- 1602) Duke of Saxe-Weimar
- Frederick Wilhelm I (1562- 1602) Duke of Saxe-Weimar. Married firstly Sophie of Württemberg (1563 – 1590) daughter of Christoph, Duke of Württemberg and secondly Countess Palatine Anna Maria of Neuburg (1575 – 1643) daughter of Philipp Ludwig, Count Palatine of Neuburg.
After Frederick William's death, the land was split between his young sons and his brother.
Duke of Saxe-Altenburg
1603–1672
Lands divided between Saxe-Gotha and Saxe-Weimar
Co-rulers:
John Philip (1597 –1639) Duke of Saxe-Altenburg
- John Philip (1597 –1639) Duke of Saxe-Altenburg. Married Elisabeth of Brunswick-Wolfenbüttel (1593 – 1650) daughter of Henry Julius, Duke of Brunswick-Wolfenbüttel.
- Frederick (1599 –1625) Duke of Saxe-Altenburg.
- John William (1600–1632) Duke of Saxe-Altenburg.
Frederick William II (b. posthumously 1603 –1669) Duke of Saxe-Altenburg
- Frederick William II (b. posthumously 1603 –1669) Duke of Saxe-Altenburg (sole ruler from 1639). Married firstly Sophie Elisabeth of Brandenburg (1616 – 1650) daughter of Christian William, Margrave of Brandenburg and secondly Magdalene Sibylle of Saxony (1617 – 1668) daughter of John George I, Elector of Saxony.
- Frederick Wilhelm III (1657 –1672) Duke of Saxe-Altenburg, son of Frederick William II (sole ruler)
Duke of Saxe-Weimar 1572-1815
Duke of Saxe-Weimar and Saxe-Eisenach 1741–1809
Duke of Saxe-Weimar-Eisenach 1809-1815
John II (1570 – 1605) Duke of Saxe-Weimar and Jena
- John II (1570 – 1605) Duke of Saxe-Weimar and Jena, son of John William (1530 – 1573) Duke of Saxe-Weimar. Married Dorothea Maria of Anhalt (1574 – 1617) daughter of Joachim Ernest, Prince of Anhalt.
- Johann Ernst I (1594 – 1626) Duke of Saxe-Weimar.
Wilhelm IV (1598 –1662) Duke of Saxe-Weimar
- Wilhelm IV (1598 –1662) Duke of Saxe-Weimar. Married Eleonore Dorothea of Anhalt-Dessau (1602 – 1664) daughter of John George I, Prince of Anhalt-Dessau.
John Ernest II (1627 –1683) Duke of Saxe-Weimar
- John Ernest II (1627 –1683) Duke of Saxe-Weimar. Married Christine Elisabeth (1638 –1679) daughter of John Christian, Duke of Schleswig-Holstein-Sonderburg.
William Ernest (1662 – 1728) Duke of Saxe-Weimar
- William Ernest (1662 – 1728) Duke of Saxe-Weimar. Co-ruler with his brother until 1707. Married Charlotte Marie of Saxe-Jena (1669 – 1703) daughter of Bernhard II, Duke of Saxe-Jena, divorced 1690.
Johann Ernst III (1664 – 1707) Duke of Saxe-Weimar
- Johann Ernst III (1664 – 1707) Duke of Saxe-Weimar. Co-ruler with his brother. Married firstly Sophie Auguste of Anhalt-Zerbst (1663 – 1694) daughter of John VI, Prince of Anhalt-Zerbst and secondly Charlotte of Hesse-Homburg (1672 – 1738) daughter of Frederick II, Landgrave of Hesse-Homburg.
Ernest Augustus I (1688 – 1748) Duke of Saxe-Weimar and Duke of Saxe-Eisenach
- Ernest Augustus I (1688 – 1748) Duke of Saxe-Weimar and Duke of Saxe-Eisenach from 1741, Founder of the Order of the White Falcon in 1732. Knight of the Order of the White Eagle. Married firstly Eleonore Wilhelmine of Anhalt-Köthen (1696 – 1726) daughter of Emmanuel Lebrecht, Prince of Anhalt-Köthen and secondly Princess Sophie Charlotte of Brandenburg-Bayreuth (1713 – 1747) daughter of George Frederick Charles, Margrave of Brandenburg-Bayreuth.
Ernst August II Konstantin (1737 –1758) Duke of Saxe-Weimar and Duke of Saxe-Eisenach
- Ernst August II Konstantin (1737 –1758) Duke of Saxe-Weimar and Duke of Saxe-Eisenach (personal union). Grand Master of the Order of the White Falcon. Knight of the Order of the White Eagle. Knight of the Ordre de la Sincérité. Married Anna Amalia of Brunswick-Wolfenbüttel (1739 – 1807) daughter of Karl I, Duke of Brunswick-Wolfenbüttel.
- Karl August (1757 – 1828) Duke of Saxe-Weimar and Duke of Saxe-Eisenach (personal union), Duke of Saxe-Weimar-Eisenach from 1809, and Grand Duke Saxe-Weimar-Eisenach from 1815. Grand Master of the Order of the White Falcon. Knight of the Order of the White Eagle. Knight of the Order of St. Andrew. Knight of the Order of Saint Alexander Nevsky. Knight of the Order of Saint Vladimir. Knight of the Order of Saint Anna. Knight of the Order of St. George. Married Princess and Landgravine Louise of Hesse-Darmstadt (1757 – 1830) daughter of Louis IX, Landgrave of Hesse-Darmstadt.
Grand Duke of Saxe-Weimar-Eisenach 1815-1918
Karl August (1757 – 1828) Grand Duke Saxe-Weimar-Eisenach
- Karl August (1757 – 1828) Duke of Saxe-Weimar and Duke of Saxe-Eisenach (personal union), Duke of Saxe-Weimar-Eisenach from 1809, and Grand Duke Saxe-Weimar-Eisenach from 1815. Grand Master of the Order of the White Falcon. Knight of the Order of the White Eagle. Knight of the Order of St. Andrew. Knight of the Order of Saint Alexander Nevsky. Knight of the Order of Saint Vladimir. Knight of the Order of Saint Anna. Knight of the Order of St. George. Married Princess and Landgravine Louise of Hesse-Darmstadt (1757 – 1830) daughter of Louis IX, Landgrave of Hesse-Darmstadt.
Karl Friedrich (1783 – 1853) Grand Duke of Saxe-Weimar-Eisenach
- Karl Friedrich (1783 – 1853) Grand Duke of Saxe-Weimar-Eisenach. Grand Master of the Order of the White Falcon. Knight of the Order of Saint Stephen of Hungary. Married Grand Duchess Maria Pavlovna of Russia (1786 – 1859) daughter of Paul, Emperor of Russia.
Karl Alexander (1818 – 1901) Grand Duke of Saxe-Weimar-Eisenach
- Karl Alexander (1818 – 1901) Grand Duke of Saxe-Weimar-Eisenach. Grand Master of the Order of the White Falcon. Knight of the Golden Fleece. Married Princess Sophie of the Netherlands (1824 – 1897) daughter of William II, King of the Netherlands.
Wilhelm Ernst (1876 – 1923) Grand Duke of Saxe-Weimar-Eisenach
- Wilhelm Ernst (1876 – 1923) Grand Duke of Saxe-Weimar-Eisenach until 1918. Grand Master of the Order of the White Falcon. Knight of the Military Order of St. Henry. Married firstly Princess Caroline Reuss of Greiz (1884 – 1905) daughter of Heinrich XXII, Prince Reuss of Greiz and secondly Princess Feodora of Saxe-Meiningen (1890 – 1972) daughter of Prince Friedrich Johann of Saxe-Meinigen.
Duke of Saxe-Eisenach 1640–1644
Lands divided between Saxe-Gotha and Saxe-Weimar
Albrecht IV (1599 – 1644) Duke of Saxe-Eisenach
- Albrecht IV (1599 – 1644) Duke of Saxe-Eisenach, son of John II (1570 – 1605) Duke of Saxe-Weimar and Jena. Married Dorothea of Saxe-Altenburg (1601 – 1675) daughter of Frederick William I, Duke of Saxe-Weimar.
Duke of Saxe-Eisenach 1662-1741
Merged with Saxe-Weimar into Saxe-Weimar-Eisenach in 1741
Adolf Wilhelm (1632 – 1668) Duke of Saxe-Eisenach
- Adolf Wilhelm (1632 – 1668) Duke of Saxe-Eisenach, second son of Wilhelm IV (1598 –1662) Duke of Saxe-Weimar. Married Marie Elisabeth of Brunswick-Wolfenbüttel (1638 - 1687) daughter of Augustus the Younger, Duke of Brunswick-Lüneburg.
- Wilhelm August (1668 – 1671) Duke of Saxe-Eisenach.
Johann Georg I (1634 – 1686) Duke of Saxe-Marksuhl later Duke of Saxe-Eisenach
- Johann Georg I (1634 – 1686) Duke of Saxe-Marksuhl later Duke of Saxe-Eisenach, third son of Wilhelm IV (1598 –1662) Duke of Saxe-Weimar. Married Johannetta of Sayn-Wittgenstein (1632 – 1701) Sovereign Countess of Sayn-Wittgenstein-Sayn-Altenkirchen, daughter of Ernest, Count of Sayn-Wittgenstein-Sayn.
Johann Georg II (1665 – 1698) Duke of Saxe-Eisenach
- Johann Georg II (1665 – 1698) Duke of Saxe-Eisenach. Married Sophie Charlotte of Württemberg (1671 – 1717) daughter of Eberhard III, Duke of Württemberg.
John William III (1666 – 1729) Duke of Saxe-Eisenach
- John William III (1666 – 1729) Duke of Saxe-Eisenach. Knight of the Order of the Black Eagle. Married firstly Amalie (1655 – 1695) daughter of William Frederick, Prince of Nassau-Dietz, secondly Christine Juliane of Baden-Durlach (1678 – 1707) daughter of Prince Charles Gustav of Baden-Durlach, thirdly Magdalene Sibylle of Saxe-Weissenfels (1673 – 1726) daughter of Johann Adolf I, Duke of Saxe-Weissenfels and fourthly Marie Christine Felizitas of Leiningen-Dagsburg-Falkenburg-Heidesheim (1692 – 1734) daughter of Johann Karl August, Count of Leiningen-Dagsburg-Falkenburg-Heidesheim and Lord of Broich and Bürgel.
Wilhelm Heinrich (1691 – 1741) Duke of Saxe-Eisenach
- Wilhelm Heinrich (1691 – 1741) Duke of Saxe-Eisenach. Knight of the Order of the White Falcon. Knight of the Order of the Black Eagle. Married firstly Albertine Juliane of Nassau-Idstein (1698 – 1722) daughter of George August, Count of Nassau-Idstein and secondly Anna Sophie Charlotte of Brandenburg-Schwedt (1706 – 1751) daughter of Albert Frederick, Margrave of Brandenburg-Schwedt.
Duke of Saxe-Jena 1672-1690
Lands divided between Saxe-Weimar and Saxe-Eisenach
Bernhard II (1638 – 1678) Duke of Saxe-Jena
- Bernhard II (1638 – 1678) Duke of Saxe-Jena, fourth surviving son of Wilhelm IV (1598 –1662) Duke of Saxe-Weimar. Married Marie Charlotte de la Trémoille (1632 – 1682) daughter of Henri III de La Trémoille, 3rd Duke of Thouars, 2nd Duke of La Tremoille, Prince of Talmond and Taranto.
- Johann Wilhelm (1675 – 1690) Duke of Saxe-Jena.