 Later, he was bestowed the royal title of Krom Luang Devawongse Varoprakar in 1886.HM the King Rama V informally called Prince Devan as his "right hand".During the reign of HM the King Vajiravudh, Rama VI of Siam, who was the royal child of his maternal younger sister, Queen Sri Bajarindra, the Queen Mother, he was delegated to work as the Head of HM the King's royal administration (Prime Minister) and be bestowed the title of Krom Phra Devawongse Varoprakar, in 1911.