The person to whom she would be betrothed is Cumhaill's son, Fionn mac Cumhaill. Receiving intelligence from the oil of the salmon of knowledge, the great warrior who controls the healing water. Unparalleled under the heavens, he is the head of a Fianna, a group of knights. The warrior's strength and fame could even rival those of the High King. There should not be any other marriage engagement which is as joyful as this anywhere else.

Fate/Zero, Act 8, Part 1