Tan Chao Khun Mahā Samai Sukhasamiddho was born in Laos in 1943. After migration to Bangkok, he was ordained as novice in 1957. His full ordination took place in June 1963. During his time as young novice and young monk he completed his Dhamma studies at the advanced level and Pali Language at level 5. Before being admitted to study at the University level, he took another three years to do the secular studies. He was graduated from Mahamakut University in 1972. After taking one year course of training for Buddhist Missionary overseas, he was sent together with the most senior meditation teacher Luang Pu Boonyarith to Sydney to look after the newly established Buddhist center in 1974.

As a reward for his long and good service to the Buddhist Community in Australia, Tan Chao Khun Samai has been given the new titles four times in the last 42 years. His current title is Phra Thepsilaporn.

Each time the new title has been conferred upon him by the King of Thailand on his birthday, the 5th of December. Moreover, Mahamakut University has conferred upon him PhD Honorary Degree in May 2003 in acknowledging his long service in spreading Buddhism.

Tan Chao Khun Samai assumed the position as the leader of the Dhammayutta Sangha in Australia and New Zealand in 1998. He currently serves as a spiritual advisor to the Dhammayutta Sangha Council, and is the Abbot of Wat Pa Buddharangsee in Leumeah, NSW.