Nang Klao King of Siam

1788 – 1851

• Khlōng prāpdāphisēk chalœ̄m phrakīat Phrabāt Somdet Phra Phutthalœ̄tla Naphālai
• Prachum phrarātchaputchā
• [Proclamation against opium, 18 May 1839]