Pippin of Italy (April, 773-July 8, 810) was the third son of Charlemagne, and the second with his wife Hildegard of Savoy. He was born Carloman, but when his brother Pippin the Hunchback betrayed their father, the royal name Pippin passed to him. He was made king of Italy at after his father's conquest of the Lombards in 781. He was crowned King by PopeHadrian I.
He was active as ruler of Italy and worked to expand the Frankish empire. This included a long, but unsuccessful siege of Venice in 810. The siege lasted six months and Pippin's army was ravaged by the diseases of the local swamps and was forced to withdraw. A few months later Pippin died.
He married Bertha of Toulouse and had five daughters with her: Adelheid, Atala, Gundrada, Berthais, and Tetrada. He also had an illegitimate son Bernard. Pippin was expected to inherit a third of his father's empire, but Pippin died before him. The Italian crown passed on to his son Bernard, but the empire went to Pippin's younger brother Louis the Pious.
Arguably the founder of a Frankish Empire in Western Europe, Charlemagne was the elder son of Pepin the Short (714 - September 24 768, reigned 751 - 768), the brother of the Lady Bertha (mother of Roland), the first Carolingian king, and his wife Bertrada of Laon (720 - July 12 783).
On the death of Pepin the kingdom was divided between Charlemagne and his brother Carloman (Carloman ruled Austrasia).