Arthur’s royal treasurer.
During the False Guinevere (‘Genievre’) episode, Sir Daguenet (Dagonet), Arthur’s fool, took over the administration of Arthur’s court. Daguenet depleted the funds in the royal treasury. When Fole reproved Daguenet for overspending, Daguenet killed him.
See also
Guinevere the False | The Legend of King Arthur
Source
Les Prophecies de Merlin | Richart d’Irlande, 1272-1279