Note 1 — CANTO XII.
Charles Eliot Norton translation
In 1271, Prince Henry, son of Richard of Cornwall, was stabbed during the mass, in a church at Viterbo, by Guy of Montfort, to avenge the death of his father, Simon, Earl of Leicester, in 1261. The heart of the young Prince was placed in a golden cup, as Villani (vii. 39) reports, on a column, at the head of a bridge in London.