Khamfan was the most affluent of his brothers due to his marriage to Netnarivai, an heiress to a wealthy man in Mae Hong Son.

[1] He renovated the abandoned city of Hariphunchai (present-day Lamphun) and was promoted to first Prince of Lumphun (พระยานครลำพูน).

When he was 15 years old, his older brothers, Kawila and Thammalungka began to support Siam and joined troop with Taksin's army.

When Rama I has crowned himself, he appointed Kawila and his brothers the titles to rule Lanna kingdom.

In order to end this confusion, the army from Lampang and Chiang Mai led by Kawila, Duangthip, and Khamfan attacked Saton, captured the fake prince and his people, assets, and livestock from several cities and sent to Rama I.

Battle with Chiang Saen and Mong Yawng Township In the next two years, troops from Chiangmai (under Kawila), Lampang (under Duangthip and Khamfan), and Nan moved toward north, attacked Chiang Saen and Mong Yawng in order to expand territory.

War with Burma, Lao, Lu In 1806, Khamfan and Moola from Lampang attacked Chiang rung (Jinghong).