Devarajkunchon Temple is a third-rank royal monastery of the Voraviharn class. Established in 1307 during the Ayutthaya period, it was originally a civil institution called Samo Khraeng Temple, after the tree of the family Combretaceae or Samo Rongraeng in Thai, which grew prolifically in this neighborhood. Some people believe that the word samo comes from thamo in Khmer, which means stone or rock, and the temple might have been formerly called Thamo Khraeng, meaning solid rock.
In the first reign of the Rattanakosin period, Prince Mahasurasinghanad, the Prince of the Front Palace, had the temple restored. The restoration was continued by Prince Phithak Montri, son of Princess Si Sudarak, who was the elder sister of King Rama I the Great and matriarch of the Montrikul family. In the following reign, Prince Phithak Thewet, son of King Rama II and founder of the Kunjara family from which the word ‘kunchon’ in the temple’s nomenclature is derived, followed suit. When the prince passed away, the patronage was transferred to his son, Prince Singhanad Rajdurongrith, and successive members of the Kunjara family.
King Rama IV elevated the temple to the status of royal monastery and bestowed the name “Devarajkunchon” on it. The word devaraj refers to the deity Indra and kunchorn or kunjara means elephant; so the temple’s nomenclature indicates Indra’s elephant.
On 15 February 2003, His Majesty King Bhumibol Adulyadej bestowed the name “Phra Buddha Devaralj patimakorn” on the principal Buddha image enshrined in the ordination hall of the temple.
On 19 March 2003, Her Majesty Queen Sirikit granted a sum of one million baht from her royal purse for the restoration of the ordination hall.
In 2009, His Royal Highness Crown Prince Maha Vajiralongkorn (now King Rama X) proceeded to the temple on 27 July to preside over the consecration of a sash created for Phra Buddha Devaraj Patimakorn and on 28 July to adorn the image with the sash.
In 2012, the Committee Overseeing the Projects on the Conservation and Maintenance of the Religious Places related to the Monarchy and the Promotion of Religious Dissemination, The Crown Property Bureau, agreed on the restoration project of the ordination hall of Devarajkunchon Temple to revive its elegance. The restoration was completed in late 2013.
The temple is currently registered as a national religious institution by the Fine Arts Department.