Ernest the Iron (1377 - 1424) was the Duke of Carinthia, Styria, and Margrave of Carniola from 1406 until 1424.

Ernest was the youngest son of Duke Leopold III. After his father was killed in the Battle of Sempach in 1386, Ernest was placed under the guardianship of Archduke Albert III with the Pigtail of Austria. In 1401 he accompanied King Rupert of the Palatinate on his campaign in Italy. After his brother William the Courteous died in 1406, the lands he ruled were split and Ernest received Carinthia, Carniola, and Styria. With his brother Leopold he was the guardian of the infant Archduke Albert V, although the split guardianship started a civil war in 1407 which only ended in 1409.

Ernest was in constant trouble with the Holy Roman Emperor Sigismund of Luxembourg from 1412. In 1414 Ernest was traditionally crowned the Duke of Carinthia, and he was the last Duke to perform the rite. Ernest was also the first member of the House of Habsburg to use the title of "Archduke", which Rudolph IV had fraudulently claimed for the family. After his brother Frederick IV of the Tyrol was banned by the Emperor in 1417 following his support for the Antipope John XXIII at the Council of Constance Ernest attempted to annex the Tyrol, but after failing to he signed an agreement with Frederick and helped him successfully defend the Tyrol from the Emperor.

Ernest died in Bruck an der Mur on 10 June 1424 and was buried in the Cisterian Abbacy of Rein. Ernest married twice. His first wife was Margaret, Princess of Pomerania, and he had no children with her. His second was Cymburgis of Masovia. With her he had nine children, of which four survived infancy, who through her developed the famous Habsburg lip. Ernest's title "the Iron" was given to him only after he died.

Children with Cymburgis of MasoviaEdit

  1. Frederick (21 September 1415 - 19 August 1493)
  2. Margaret (1416 - 1486)
  3. Albert VI (12 December 1418 - 2 December 1463)
  4. Catherine (1420 - 1493)
  5. five others, all died in infancy

Preceded by:

Ernest the Iron

Succeeded by:

William the Courteous Duke of Carinthia
1406 - 1424
Frederick V & Albert VI
William the Courteous Duke of Styria
1406 - 1424
Frederick V & Albert VI
William the Courteous Margrave of Carniola
1406 - 1424
Frederick V & Albert VI

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