In the course of time, Tsewang gave birth to a boy who was named Sanje Tenzin, with Tsangyang's grandfather and Nawang Norbu with his father. Due to this fact, legend said that he would not drink his mother's milk from the day after their birth. One day, when his face began to swell from an infection, Tsangyang could hardly open his eye, two local diviners were summoned. They prescribed purifactory rite and said that his name should be changed to Ngawang Gyamtso.