The histories of Muang Yong and Lamphun revealed that human migration took place for different reasons in different periods. The study discovered that migration of the Yong to the Lanna region occurred during the reign of King Tilokarat. The most important migration happened in 1805 during the reign of King Kawila, who collected peoples from different regional cities to restore Chiang Mai and Lamphun after successive wars with the Burmese. The migration of the Yong to Lamphun at this time was done in such a manner that the whole social structure was brought with them. Together with the ruling class, monks and a large number of ordinary people, they migrated from Muang Yong to Lamphun. Since they were the major ethnic group, they were able to maintain their socio-cultural identity. Their migration had influenced the political structure of the city in the initial stages. They jointly administered the city with the ruling family of Chao Chet Ton. The first settlement was in the river plains before spreading out to other basins. Although they were the major population of the city, there were other ethnic groups migrating to nearby areas at the same time, resulting in socio-cultural diversity and assimilation of the local populace (page 15).