Koodalmanikyam is the Malayalam translation of the Sanskrit word Sangameswara. There is, however, another folklore about the name. One day the idol was found to give out uncommon brightness from its forehead. Beaing unable to identify the source of the brightness, some brought a Quartz (Manikyam) in the possession of Raja of Kayamkulam for comparison. As they were comparing the brightness of the two, it is said the stone brought from Kayamkulam mysteriously slipped from the hand and merged with the one on the idol. The merging of the two manikyams led to the name ‘Koodalmanikyam’. Similar brightness is reported to have appeared on the idol once again, much later in 1907.