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For the second Suppo who was Duke of Spoleto, see Suppo II of Spoleto.
Suppo II was a member of the Supponid family and Engelberga, the wife of Louis II may have been his sister. He was Count of Parma, Asti, and Turin. Along with his cousin, Suppo III, he was the chief lay magnate in Italy during Louis's reign.
- Wickham, Chris. Early Medieval Italy: Central Power and Local Society 400-1000. MacMillan Press: 1981.