 In 1886, after the death of the last Vice King Bovorn Vichaichan, King Chulalongkorn chose not to appoint one of his brothers as a new Vice King, but instead appointed his eldest son as the Crown Prince of Siam.On 14 January 1886, he was officially introduced to his position with the title of "Sayam Makutrajakuman", or Crown Prince of Siam.From this appointment Sir Ernest Mason Satow, the English ambassador to Thailand, brought a telegraph of congratulations from Queen Victoria of England.