Charlemagne ( /ˈʃɑrlɨmeɪn/ or /ˈʃɑrləmeɪn/; French pronunciation: [ʃaʁ.lə.maɲ]; c. 742 – 28 January 814), also known as Charles the Great (Latin: Carolus Magnus or Karolus Magnus), was King of the Franks from 768 and Emperor of the Romans (Imperator Romanorum) from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Central Europe. During his reign, he conquered Italy and was crowned Imperator Augustus by Pope Leo III on 25 December 800.