[1] René Charbonneau first provided his services to the Siamese King Narai as an architect, to establish a wooden fort on the frontier with the country of Pegu.
[2] In 1681 or 1682, King Narai, who was seeking to reduce Dutch and English influence, named René Charbonneau the Governor of the island of Phuket, a position which he held until 1685.
Charbonneau had received orders from King Narai to allow ships of all nations to trade freely in Phuket.
[5] René Charbonneau worked as a nurse in the French hospital established in 1669 in Ayutthaya by the Catholic Bishops Lambert and Ballue, with Father Laneau as the chief physician.
The hospital provided medical care to about 200-300 people daily.