After years of an inconclusive war between Vietnam and Siam, King Ang Duong who had ascended to the throne in 1841 was finally formally invested as co-monarch of Cambodia in Bangkok with the royal regalia brought from Cambodia with the agreement of both Siam and Vietnam, while a similar ceremony without the regalia was being held in Phnom Penh for Queen Ang Mei. While Etienne Aymonier pretends that King Ang Duong He had the Sacred Sword safely secured at Oudong under a special pavilion where it was watched over night and day by the "baku"., it seems that like the regalia was stored in Bangkok for ten more years, safe from Vietnamese pillage. Ang Duong also sent his son, future king Norodom of Cambodia, to study in Bangkok, in 1850, as close as possible to the regalia.