Note 2 — CANTO III.
Charles Eliot Norton translation
Constance, the daughter of Manfred, was married to Peter of Aragon. She had three sons, Alphonso, James, and Frederick. Alphonso succeeded his father in Aragon, and James in Sicily, but after the death of Alphonso James became King of Aragon. and Frederick King of Sicily. Manfred naturally speaks favorably of them, but Dante himself thought ill of James and Frederick. See Canto VII., towards the end.