Guisclafredo I of Carcassonne (? - 821), Count of Carcassonne (810-821) Family origins
He is credited with being the eldest son of the legendary Count Bellon I of Carcassonne. They were his brothers Oliba I and Suñer I of Ampurias, among others. Ascent to Count's title
On the death of his father, the brothers divided the counties. Thus Guisclafredo received the dominions over Carcassonne, which at the time was one of the most important cities of the south of France.
Guisclafredo died without being recognized any descendants. The county of Carcassonne thus passed to its second brother, Oliba I.
wiki