Ernst I, Duke of Saxe-Altenburg, was a duke of Saxe-Altenburg. He was the first son of Georg, Duke of Saxe-Altenburg and Marie Luise of Mecklenburg-Schwerin. In 1853, he succeeded his father as Duke of Saxe-Altenburg. He was of a retiring disposition and he took little active part in running the country. After a reign that lasted 55 years, he died without a living direct male heir; because of this, he was succeeded by his nephew, Ernst.
- Occupation
- aristocrat
- Citizenship
- Duchy of Saxe-Altenburg
- Born
- September 16, 1826
- Died
- February 7, 1908
