Luang pu Sim Buddhacaro was born on the 26th November 1909 in Sakhon Nakhon
Province, North-East Thailand. His parents were farmers and dedicated supporters
of the local monastery. At the age of 17 Luangpu Sim took novice ordination and
shortly afterwards became a disciple of the Ajaan Mun. Luangpu Sim stayed with
Ajaan Mun and various of his senior disciples for many years, taking full
ordination at the age of 20 at Wat Sri Candaravasa, Khon Kaen.
In later
years he was the Abbot of a number of monasteries in various parts of Thailand
and was given the ecclesiastical title of Phra Khroo Santivaranana in 1959. In
1967 he established a monastery in the remote mountains of Chiang Dao in Chiang
Mai province that remained his residence until his death in 1992.
Credit given to msiathaibuddha.com