Vice County of Rohan
The vice-county of Rohan around the place Rohan in today's French department of Morbihan came into being as a result of the construction of Rohan Castle by Alain I. de Rohan , which also gave its name to the owner family, the Rohan House .
When the male ruling family with Viscount Jacques de Rohan died out in 1527, the vice-county remained in the family due to a precautionary marriage policy. The new vice-count's family, the Rohan-Gié, reached the elevation of the vice-county of Rohan to the Duchy of Rohan a few generations later .
Vice Count of Rohan
- Alain I. de Rohan , called the Black (le Noir) († 1128), 1st Viscount de Rohan, son of Eudon 1st, Viscount de Porhoët
- Alain II. De Rohan († after 1168), 2nd Viscount de Rohan et de Castelnoec , Seigneur de Guéméné
- Alain III. de Rohan († probably 1195), his son, 3rd Viscount de Rohan
- Alain IV. De Rohan called the Younger (le Jeune) († 1205), his son, 4th Viscount de Rohan
- Geoffroy de Rohan († 1221), his son, 5th Viscount de Rohan
- Olivier I. de Rohan († 1228), his brother, 6th Viscount de Rohan
- Alain V. de Rohan († 1242), his brother, 7th Viscount de Rohan
- Alain VI. de Rohan († 1304), his son, 8th Viscount de Rohan
- Olivier II. De Rohan († 1326), his son, 9th Viscount de Rohan
- Alain VII. De Rohan , (X 1352), his son, 10th Viscount de Rohan
- Jean I. de Rohan (attested in 1395), his son, 11th Viscount de Rohan
- Alain VIII. De Rohan († 1429), his son, 12th Viscount de Rohan
- Alain IX. de Rohan , called the Great (le Grand) or the Builder (le Bâtisseur) († 1462), his son, 14th Viscount de Rohan
- Jean II. De Rohan († 1516), his son, 15th Viscount de Rohan
- Jacques de Rohan († 1527), his son, 16th Viscount de Rohan
- Anne de Rohan († 1529), his sister, 17th Vicomtesse de Rohan, ⚭ 1517 Pierre II. De Rohan-Gié, son of Maréchal de Gié
- René I. de Rohan (X 1552), his son, 18th Viscount de Rohan
- Henri I. de Rohan († 1575), his son, 19th Viscount de Rohan
- René II. De Rohan († 1586), his brother, 20th Viscount de Rohan
- Henri II. De Rohan (X 1639), his son, 21st Viscount and 1st Duc de Rohan