The Duke of La Vallière is the head of the House of La Vallière and father of Louise de La Vallière.
The duke opposed the invasion of Albion.
The duke married Karin Désirée de Maillart. They had three children, Éléonore, Cattleya, and Louise.
The duke is a descendant of Brimir through the royal house of Tristain, more specifically its cadet branch House of La Vallière. He is a distant cousin of Marianne of Tristain and her daughter Henrietta, the current Queen of Tristain.
| Ancestors of Duke of La Vallière