Louis I

[ loo-ee, loo-is; French lwee ]
/ ˈlu i, ˈlu ɪs; French lwi /

noun

le Débonairethe Pious,a.d. 788–840, king of France and Germany 814–840; emperor of the Holy Roman Empire 814–840 (son of Charlemagne).

British Dictionary definitions for louis i

Louis I
/ (ˈluːɪ, French lwi) /

noun

known as Louis the Pious or Louis the Debonair. 778–840 ad, king of France and Holy Roman Emperor (814–23, 830–33, 834–40): he was twice deposed by his sons