|Duke of La Vallière|
|Title||Duke of La Vallière|
|Height||185 cm (6 ft 1 in)|
|Occupation||Duke of La Vallière|
|Magical level||Greater than Line class|
|Voiced by||Jiro Saito (Japanese)|
The Duke de La Vallière (Duke of the Vallière) is married to Karin, Duchess de La Vallière of Tristain. The Duchess is also know as Knight "Heavy Wind". When the Duchess says this family has its own punishment to deal when Louise had broken the country's laws. On hearing this, the Duke of La Vallière, with trembling fingers began to fiddle with his mustache. He recalled the old times. Youth, beauty, and the severe past of his wife. He has magical powers but not as powerful as the Duchess herself.