Uparat
After his death the office of Front Palace was left vacant until On 14 January 1886, when Chulalongkorn's son with Princess Consort Savang Vadhana was made Crown Prince Maha Vajirunhis or Somdet Phra Boromma-orasathirat Sayam Makutrajakuman. The title of Front Palace, which was first created in 1688 by King Petracha of Ayutthaya was thus abolished and replaced with an heir apparent, whose succession is to be based on the principle of male primogeniture. The new invented title brought Siamese succession in line with the European tradition.