A knight of Arthur depicted on the Modena archivolt (underside of an arch in Modena Cathedral). This knight of Arthur appears nowhere else, in either literature or art.
One of Arthur’s warriors, depicted on the Modena Archivolt (underside of an arch in Modena Cathedral) as part of a troop who rode to rescue Guinevere from Marduc of the Dolorous Tower. This knight appears nowhere else, in either literature or art.

The name is possibly a variation of Gawain, but another character named Galvagin—more properly identified with Gawain—appears on the same sculpture. Galvariun has also been identified with Galleron.