The municipality is said to be have been named after a romantic folk legend.
The Legend of Dingras Legend has it that in the early times, there were two prosperous
Barangay in the present site of the town, each ruled by a powerful chief or
datu. They were bitter and mortal enemies. Naslag was the powerful chief of the
barangay north of the river, while Allawigan was the chief of the
barangay to the south of the river. One day, Allawigan and his warriors went out to go hunting. Ras, his son, was the bravest among them. During the hunt, Ras followed a deer that went north across the river. As he was chasing the deer, he saw a beautiful damsel gathering wildflowers on the opposite side of the riverbank. She was Ding, the daughter of Naslag. To help the lady, Ras gathered the most beautiful flowers near him, attached them to an arrowhead, and shot it over the river to land by the lady's feet. Ding looked at the other side of the river and waved her hands. Ras went home happily. Ras begged his father for permission to win Ding for his wife; but because the fathers of Ding and Ras were bitter enemies, the only way he could win her was in an open battle fought fiercely between the two tribes. Ras led his father's warriors. They fought valiantly and came out victorious in the end. Ras asked for Ding's hand as a prize, but Naslag refused. This angered him and hurled a challenge to the bravest warrior of Naslag in single combat with Ding as prize. The challenge was accepted. The combat was fought and again, Ras was victorious. He brought Ding triumphantly to Allawigan, his father. Thereafter, the people named the two
barangays Dingras, after Ras, their valiant warrior ruler, and Ding, his wife. ==History==