Crown Prince of Thailand

The Crown Prince of Thailand (or Siam; Thai: สยามมกุฎราชกุมาร; RTGS: Sayammakutratchakuman; lit. the royal son of Siam) is a title held by the heir apparent to the Thai throne. First created by King Chulalongkorn (Rama V) in 1886, for his son Prince Maha Vajirunhis, the king's eldest son by a royal wife Queen Savang Vadhana. Prior to this, the Siamese throne did not have a law or formal system regulating the royal succession. In 1688 King Petracha of Ayutthaya created the title of Front Palace, which by the Rattanakosin period had become the main title granted to the heir presumptive to the throne. However few Front Palaces have succeeded to the throne this way, with the exception of King Buddha Loetla Nabhalai (Rama II) in 1809. After the death of Bovorn Wichaichan in 1885, the title of Front Palace was abolished and replaced with the title of Crown Prince, who became heir apparent to the throne.

Crown Prince of Thailand
สยามมกุฎราชกุมาร
Incumbent
Vacant
since 13 October 2016
StyleHis Royal Highness
AppointerKing of Thailand
Term lengthLife tenure or until accession as Sovereign
Inaugural holderVajirunhis
Formation14 January 1886

In 1924 King Vajiravudh (Rama VI) promulgated the 1924 Palace Law of Succession to regulate the succession, this law essentially barred females, children of commoner wives or children of foreign wives to the throne, it also re-affirmed Agnatic Primogeniture, or succession through the male-line by seniority. This law also affected the individuals who could become Crown Prince. Since its creation three Princes have been raised to this title, and two have succeeded to the throne.

The title in Thai, Sayammakutratchakuman, comes from conjugation of the words Sayam (Siam), Sanskrit makut (meaning “crown”), ratcha from Sanskrit rāj, and kuman from Sanskrit kumār (meaning “son”).

Crown Princes
Crown Princes of Thailand
Picture Name Relationship to monarch Mother Birth Receive title Ceased to be Crown Prince
Maha Vajirunhis Eldest son of King Rama V Queen Savang Vadhana 27 June 1878 14 January 1886[1] 4 January 1895
(death)
Maha Vajiravudh
(later King Rama VI)		 Eldest son of King Rama V Queen Saovabha Phongsri 1 January 1881 4 January 1895[2] 23 October 1910
(ascension)
Maha Vajiralongkorn
(later King Rama X)		 Eldest son of King Rama IX (only son) Queen Sirikit 28 July 1952 28 December 1972[3] 13 October 2016
(ascension)[4]

Heirs-apparent and heirs-presumptive to the throne

List of heirs apparent and heirs presumptive since 1886, those in bold succeeded to the throne as King.

Heirs to the Thai Throne
Heir Status Relationship to monarch Became Heir Ceased to be Heir Next in line of succession
(Relation to heir)		 Monarch
Date Reason Date Reason

Maha Vajirunhis		 Crown Prince Eldest son 14 January 1886 New creation 4 January 1895 Died of typhoid Prince Vajiravudh, half-brother Rama V

Maha Vajiravudh		 Crown Prince Son 4 January 1895 Half-brother died 23 October 1910 Father died, became king. Prince Chakrabongse Bhuvanath, brother

Chakrabongse Bhuvanath		 Hereditary Prince Brother 23 October 1910 Brother became king 13 June 1920 Died of pneumonia Prince Asdang Dejavudh, brother Rama VI

Asdang Dejavudh		 Hereditary Prince Brother 13 June 1920 Brother died 9 February 1924 Died of nephrosis Prince Chudadhuj Dharadilok, 1910–1923, brother
Varananda Dhavaj, 1923–24, nephew

Varananda Dhavaj		 Mom Chao Nephew 9 February 1924 Uncle died 2 September 1924 Skipped by the royal command. Prince Prajadhipok, uncle

Prajadhipok		 Prince Brother Brother 2 September 1924 The prince was skipped 25 November 1925 Brother died, became king Prince Mahidol Adulyadej, half-brother

Mahidol Adulyadej		 Prince Brother Half-brother 25 November 1925 Half-brother became King 24 September 1929 Died of pneumonia Ananda Mahidol, son Rama VII

Ananda Mahidol		 Phra Ong Chao (1927) Nephew (son of Mahidol Adulyadej) 24 September 1929 Father died 2 March 1935 Abdication of uncle; became king Bhumibol Adulyadej, brother

Bhumibol Adulyadej		 Prince Brother Brother 2 March 1935 Brother became King 9 June 1946 Brother died, became King Prince Paribatra Sukhumbandhu, 1935–1944 uncle Rama VIII
Prince Chumbhotbongs Paribatra, 1944–1946 cousin

Chumbhotbongs Paribatra		 Phra Ong Chao Cousin 9 June 1946 Cousin became king 28 July 1952 Son born to king Prince Sukhumabhinanda, half-brother Rama IX

Maha Vajiralongkorn		 Crown Prince (1972) Only Son 28 July 1952 Born 13 October 2016 Father died, became King Prince Chumbhotbongs Paribatra, 1952–1959, first cousin once removed
Prince Sukhumabhinanda, 1959–1974, first cousin once removed
Princess Sirindhorn, 1974–1978, sister
Princess Bajrakitiyabha, 1978–1979, daughter
Prince Juthavachara, 1979–1997, first son
Princess Bajrakitiyabha, 1997–2005, daughter
Prince Dipangkorn Rasmijoti, 2005–present, son

Dipangkorn Rasmijoti

 Chao Fa Youngest Son 13 October 2016 Father became king
-
-
 Princess Bajrakitiyabha, half-sister Rama X

See also
Standard of the Crown Prince of Siam (1897–1910)

References

Citations
  1. Royal Gazette, Announcement of the appointment of Prince Vajirunhis to the Crown Prince of Siam (Thai), Volume 3, Chapter 44, 1 March 1886, page 368
  2. Royal Gazette, The Investiture of Crown Prince Maha Vajiravudh (Thai), Volume 11, Chapter 63, 20 January 1895, page 346
  3. Royal Gazette, Royal Decree announcing the Investiture of Crown Prince Maha Vajiralongkorn (Thai), Volume 89, Chapter 200 (ก), Special Edition, 28 December 1972, Page 1
  4. "Thai Crown Prince Maha Vajiralongkorn proclaimed king". BBC. 1 December 2016.

Bibliography
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