King Roger of Sicily was a very great king. He won and subdued all
Apulia, and many large islands besides in the Greek sea; and therefore
he was called Roger the Great. His son was William, king of Sicily, who
for a long time had great hostility with the emperor of Constantinople.
King William had three daughters, but no son. One of his daughters he
married to the Emperor Henry, a son of the Emperor Frederik; and their
son was Frederik, who for a short time after was emperor of Rome. His
second daughter was married to the Duke of Kipr. The third daughter,
Margaret, was married to the chief of the corsairs; but the Emperor
Henry killed both these brothers-in-law. The daughter of Roger
the Great, king of Sicily, was married to the Emperor Manuel of
Constantinople; and their son was the Emperor Kirjalax.