His Majesty King Ananda Mahidol Phra Attharamathibodinthorn is the son of Somdej Phra Mahitalathibet Adulyadej Vikram and Her Royal Highness Princess Maha Chakri Sirindhorn.
       His Majesty King Ananda Mahidol was born on September 20, 1925, ascended the throne as the 8th monarch of the Chakri dynasty and the first monarch after the change of government while he was 9 years old with a regent to administer the state affairs until reaching the age of majority. At that time he lived and studied in Lausanne, Switzerland. Throughout his reign, he had returned to Thailand only twice.
       During the reign, His Majesty King Ananda Mahidol has performed royal duties including royal ceremonies, government ceremonies, religious and graduation ceremonies, visiting hospitals, military units, important places, and initiated the tradition of visiting rural people.
       His Majesty King Ananda Mahidol, His Highness passed away by a gun on June 9, 1946, in the bedroom, at the Boromphiman Throne Hall, the Grand Palace Reign: 11 years, 99 days, age 19.