[1][2][3]: 195 King Mangrai the Great was born on 23 October 1238, in Ngoen Yang[1] (present day Chiang Saen), Thailand, on the Mekong River, a son of the local ruler Lao Meng and his wife Ua Ming Chom Mueang, a princess from the Tai Lue city of Chiang Rung, which is now called Jinghong, in Sipsongpanna (Xishuangbanna), China.

[1] As it was thought impossible to take the city by force, Mangrai sent a merchant named Ai Fa as a mole to gain the confidence of its King Yi Ba.

[3]: 208–209 After defeating the Hariphunchai kingdom, Mangrai decided to relocate his capital, and in 1294, Wiang Kum Kam was founded on the eastern bank of the Ping River.

[1] A few years later, Yi Ba's son, King Boek of Lampang, attacked Chiang Mai with a large army.

Prince Khram defeated King Boek in personal combat on elephant-back at Khua Mung, a village near Lamphun.

King Boek fled by way of the Doi Khun Tan mountain range between Lamphun and Lampang, but he was caught and executed.