The legend of Melattingal Mahadeva Temple suggests a divine connection with the Vaikom Mahadeva Temple. According to ancient history, the Melattingal Mahadeva Temple was established by a pious Brahmin from the Amunthuruthi Madom family. This Brahmin, a landowner under the direct administration of Attingal Swarupam, entrusted by the Travancore Raja, played a significant role in the temple's origin. The story narrates that this deeply devout Brahmin was an ardent devotee of Vaikathappan, the Lord of Vaikom Mahadeva Temple. He frequently visited Vaikom to pray and found solace in the temple's serene environment, where he practised bhajans. As he grew older, his ability to travel diminished and he more longed for the divine presence he felt at Vaikom. According to legend, in his old age, the Brahmin prayed to Vaikathappan for a way to continue his devotion despite being unable to visit the temple. One night, he had a dream in which Vaikathappan assured him that He would incarnate as a Sivalinga in the Brahmin's native place. Around the same time, people near the Vamanapuram River discovered a casket moving against the river's flow. Despite their efforts, they couldn't bring it to shore and informed Thiruswarupam, who then notified the Brahmin landowner. The old Brahmin arrived at the scene, and after chanting mantras, he sprinkled water over the casket. Miraculously, he was able to bring it ashore. Inside, they found a Sivalinga, an idol, and various traditional lamps and crafts. Recognizing the significance of this event, the Brahmin informed Thiruswarupam and a temple was constructed to house the deity, believed to be Vaikathappan incarnate in the form of the Sivalinga from the casket. The Brahmin's intense devotion and prayers are believed to have infused the spirit of Vaikathappan into the idol of Melattingal Mahadevan. Today, descendants of the Amunthuruthi Madom family continue the rituals, starting with a dip in the Vamanapuram River. The water from this river is still used for the Abhishekam (ritual bathing) of the deity. Despite any obstacles, the poojas are performed with devotion, and the Nivedyam (offerings) and other ritual items, even in small quantities, are received with great reverence.