1851 in Siam
1851 in Siam: It was the 70th year of the Rattanakosin Kingdom (the era that became Thailand). The year marked the end of King Nangklao (Rama III)’s reign and the beginning of King Mongkut (Rama IV)’s reign.
This page was last edited on 2 February 2026, at 07:39 (CET).