French Kings have been ruling the country since the 9th century. The most famous French Kings include Louis, Lothair, Odo, Roi, Capet, and Henri. Louis was a King of France from 814 to 840. Lothair was a King of France from 843 to 855. Odo was a King of France from 888 to 898. Roi was a King of France from 936 to 954. Capet was a King of France from 987 to 996. Henri was a King of France from 1574 to 1589.