Coychurch (Welsh: Llangrallo) is a small village that sits between Pencoed and Bridgend, bordering with Bridgend Industrial Estate.
It has a longstanding religious association, with an early Christian church having been built there possibly as long ago as the 8th century CE. The current church of St. Crallo was built in the 13th century CE.
One local legend claims that after his death in battle near Ogmore Castle, King Arthur was secretly laid to rest in a cave in Coed y Mwstwr Forest, just behind the village of Coychurch, for fear that the news of his death might split the nation. When his son came of age to replace him at the throne, Arthur's death was announced, and his body moved to a grave at Cor Emrys church close to Pencoed.