Who was the last emperor of France to be crowned before Napoleon Bonparte?

Answer 1

Nobody. Napoleon was the first emperor of France. Before (and a few years after) him France was a Monarchy instead of an Empire. Eventually France became a Republic. Although there was a brief Second Empire under Napoleon III.

Prior to Napoleon the Carolingian Emperors ruled over what is now France although it was West Francia at the time.

Charles I the Great was crowned by the Pope in 800 as Emperor of the West

Louis I the Pius was crowned Emperor of the West in 814

Lothair I was Emperor 817-55 (tho Charles II the Bald was King of the West Franks)

Louis II the Younger was Emperor 844-875 (jointly with his Father and also King of Italy)

Charles II the Bald was Emperor 875-77

Charles III the Fat was Emperor 882-87 (also King of the Franks)

On the death of Charles III his Empire colapses and France is ruled by Count Odo of Paris as King and then by Charles III the Simple.

The Imperial title being held by Guy of Spoleto (King of Italy) 891-4, Lambert II (King of Italy) 894-8, Arnolf of Carinthia (King of the East Franks) 896-99, and Louis III the Blind (King of Provence) 901-5. There is not another West Frankish or French Emperor until Napoleon.

The Carolingian Kings die out in 897 with Loius IV the Lazy of the West Franks, 900 with Zwentibold of Lotharingia, and 911 with Ludwig IV the Child of the East Franks.