Saxe-Altenburg (German: Sachsen-Altenburg) was one of the Saxon duchies held by the Ernestine branch of the House of Wettin in present-day Thuringia....

– 26 March 1675) was a duke of Saxe-Gotha and Saxe-Altenburg. The duchies were later merged into Saxe-Gotha-Altenburg. He was the ninth but sixth surviving...

Saxe-Gotha-Altenburg (German: Sachsen-Gotha-Altenburg) was a duchy ruled by the Ernestine branch of the House of Wettin in today's Thuringia, Germany...

Louise of Saxe-Gotha-Altenburg (Louise Dorothea Pauline Charlotte Fredericka Auguste); (21 December 1800 – 30 August 1831) was the wife of Ernst I, Duke...

Marie of Saxe-Altenburg (Alexandrina Mary Wilhelmina Catherine Charlotte Theresa Henrietta Louise Pauline Elizabeth Frederica Georgina; German: Alexandrine...

(born Princess Alexandra of Saxe-Altenburg, 8 July 1830 – 6 July 1911) was the fifth daughter of Joseph, Duke of Saxe-Altenburg and Duchess Amelia of Württemberg...

Saxe-Hildburghausen (29 April 1763 in Hildburghausen – 29 September 1834 in Altenburg), was duke of Saxe-Hildburghausen (1780–1826) and duke of Saxe-Altenburg...

states to form the Free State of Thuringia: Saxe-Weimar-Eisenach (until 1918 a grand duchy), Saxe-Altenburg and Saxe-Meiningen (until 1918 duchies), Schwarzburg-Rudolstadt...

Frederick III, Duke of Saxe-Gotha-Altenburg (14 April 1699 – 10 March 1772), was a duke of Saxe-Gotha-Altenburg. He was born in Gotha, the eldest son of...

Frederick I, Duke of Saxe-Gotha-Altenburg (15 July 1646 – 2 August 1691), was a duke of Saxe-Gotha-Altenburg. He was born in Gotha, the fourth but eldest...

Ernest II, Duke of Saxe-Gotha-Altenburg (Gotha, 30 January 1745 – Gotha, 20 April 1804) was the reigning Duke of Saxe-Gotha-Altenburg from 1772 to 1804...

Frederick II, Duke of Saxe-Gotha-Altenburg (28 July 1676 – 23 March 1732), was a duke of Saxe-Gotha-Altenburg. He was born in Gotha, the fifth child and...

Ernst I, Duke of Saxe-Altenburg (German: Ernst I. Friedrich Paul Georg Nikolaus von Sachsen-Altenburg) (16 September 1826 in Hildburghausen – 7 February...

Finally in 1672 he received the major part of Saxe-Altenburg through his wife Elisabeth Sophie, after Altenburg's last duke Frederick William III had died...

Princess Augusta of Saxe-Gotha-Altenburg (30 November [O.S. 19 November] 1719 – 8 February 1772) was Princess of Wales by marriage to Frederick, Prince...

Duke of Saxe-Altenburg from 1834 to 1848. Joseph was the second but first surviving son of Frederick, Duke of Saxe-Hildburghausen (of Saxe-Altenburg from...

Duchess Anna Sophie of Saxe-Gotha-Altenburg (22 December 1670 – 28 December 1728) was a princess of Saxe-Gotha-Altenburg and Duchess in Saxony by birth...

Upper Saxon Circle of the Holy Roman Empire: Saxe-Weimar Saxe-Eisenach Saxe-Coburg Saxe-Gotha Saxe-Altenburg Membership in the Circle gave the ruler of...

Elisabeth Sophie of Saxe-Altenburg (10 October 1619 – 20 December 1680), was a princess of Saxe-Altenburg and, by marriage, duchess of Saxe-Gotha. She was...

Ernst II (31 August 1871 in Altenburg – 22 March 1955 in Trockenborn-Wolfersdorf) was the last reigning duke of Saxe-Altenburg and a German general active...

was the mother of Ernst II, Duke of Saxe-Altenburg. Augusta was the only daughter of the Duke and Duchess of Saxe-Meiningen. Her only sibling was Georg...

Prince of Anhalt-Zerbst. Frederick II, Duke of Saxe-Gotha-Altenburg (b. Gotha, 28 July 1676 – d. Altenburg, 23 March 1732). Johann Wilhelm (b. Gotha, 4...

Елизавета Маврикиевна, née Princess Elisabeth Auguste Marie Agnes of Saxe-Altenburg; 25 January [O.S. 13 January] 1865 – 24 March 1927) was a Russian Grand...

Frederick IV, Duke of Saxe-Gotha-Altenburg (Gotha, 28 November 1774 – Gotha, 11 February 1825), was the last duke of Saxe-Gotha-Altenburg. He was the third...

Prince of Hanover, was the only son of George V of Hanover and Marie of Saxe-Altenburg. Although he was the senior male-line great-grandson of George III,...

dividing the duchy: Altenburg was taken by the sons of Frederick William I, and Weimar-Jena was retained by Johann. This line of Saxe-Altenburg became extinct...

Moritz of Saxe-Altenburg (24 October 1829 in Eisenberg – 13 May 1907 in Arco, Austria-Hungary), was a member of the ducal house of Saxe-Altenburg. He was...

Duke of Saxe-Altenburg from 1848 to 1853. He was the fourth but second surviving son of Frederick, Duke of Saxe-Hildburghausen (of Saxe-Altenburg from 1826)...

Saxe-Altenburg (Hildburghausen, 3 July 1804 – Munich, 16 May 1852), was a German prince of the ducal house of Saxe-Hildburghausen (of Saxe-Altenburg from...

House of Saxe-Meiningen and a Princess of Saxe-Meiningen by birth and a member of the House of Saxe-Gotha-Altenburg and Duchess consort of Saxe-Gotha-Altenburg...