Prince Isaravongs Vorarajakumara or Phra Chao Boromwongse Ther Phra Ong Chao Isaravongs Vorarajakumara (RTGS: Isarawong Woraratchakumarn) (Thai: ????????????????? ?????????????????????????????) (4 September 1870 – 5 June 1872), was the Prince of Siam (later Thailand.
He was a member of Siamese Royal Family.
He is a son of Chulalongkorn, King Rama V of Siam.
His mother was Saeng Galyanamitra (daughter of Phraya Jayavichit, son of Chao Phraya Nikara Bodindra (Toh) who built Galyanamitra Temple.
Princess Isaravongs Vorarajakumara had 3 siblings; 1 elder brother and 2 younger sister;
Prince Nabhanka Nibandhabongs (8 August 1874 – 17 September 1876)
Princess Beatrice Bhadrayuvadi (5 December 1876 – 30 September 1913)
Princess Charoensri Chanamayu (31 March 1878 – 24 December 1916)Prince Isaravongs Vorarajakumara died at the babyhood on 17 September 1876, at the age of only 1 year 9 months.