Dasho Zoedpoen Wangchuk gives an account of Khandro Sonam Pelden, the 12th century consort of Phajo Drugom Zhipo. According to her biography, Dasho Wangchuk said that Khandro Sonam Pelden was born in Wang Danglo and married Phajo Drugom Zhipo at 22. They saw each other from across a river, sang songs and walked to Changzam (now Lungtenzam, or destined bridge). Phajo tried to construct a stone bridge there; he made local spirits carry stones, but at dawn the spirits left the stones at Zeri. His 7 sons were thrown into the Wangchu river to reveal their fate. Khandro reached Nirvana on the 1st day of the 1st lunar month from Tango monastery, with relics left at Changgangkha by her four surviving sons.