A knight who was the offspring of a fairy (Brangepart) and a man (Guingamuer). He ruled an otherwordly island.

His body was borne to Camelot in a swan boat after the servant of a lord called the Little Knight slew him with a lance. Gareth agreed to avenge Brangemuer's death with the lance head. After Gareth accomplished his mission, Brangemuer's spirit returned to the realm of his mother.