ParanthakaSundaraChozhar and his family used to cruise on the River Ponni in their Royal boat. One day, when they went on one of the boat rides, Arulmozhivarman fell into the Ponni river and disappeared. Everybody searched everywhere but could not find the young boy. Then suddenly, a young woman came from the middle of the river and held the child, Arulmozhivarman, aloft. Thus, from that time, the child was also called Ponniyin Selvan, dear to the Ponni River.