Charlemagne child Hildegard
Marriage to Desiderata
The brothers maintained lukewarm relations with the assistance of their mother Bertrada, but in 770 Charles signed a treaty with Duke Tassilo III of Bavaria and married a Lombard Princess (commonly known today as Desiderata), the daughter of King Desiderius, to surround Carloman with his own allies. Though Pope Stephen III first opposed the marriage with the Lombard princess, he found little to fear from a Frankish-Lombard alliance.
Less than a year after his marriage, Charlemagne repudiated Desiderata and married a 13-year-old Swabian named Hildegard. The repudiated Desiderata returned to her father's court at Pavia. Her father's wrath was now aroused, and he would have gladly allied with Carloman to defeat Charles. Before any open hostilities could be declared, however, Carloman died on 5 December 771, apparently of natural causes. Carloman's widow Gerberga fled to Desiderius' court with her sons for protection.
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