ClipArt ETC
"Fan-crest, about 1350. A form of crest common in the middle ages at different periods, as in the reign of Richard I. of England, whose second great seal shows this crest, and again at the end of the thirteenth century, when it assumed the shape of a fan or screen with radiating ribs, attached to the helm at a single point." -Whitney, 1911

Medieval Helmet with Fan Crest

"Fan-crest, about 1350. A form of crest common in the middle ages at different periods, as in the reign…