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
Standard of the Crown Prince
Incumbent
Vacant
since 13 October 2016
StyleHis Royal Highness
StatusHeir apparent
Member ofChakri dynasty
AppointerMonarch
Term lengthLife tenure or until accession as Sovereign
Inaugural holderVajirunhis
Formation14 January 1886 (1886-01-14)

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 with queens of King Rama V Queen Savang Vadhana 27 June 1878 14 January 1886[1] 4 January 1895
(death)
Maha Vajiravudh
(later King Rama VI)		 Third son with queens of King Rama V Queen Saovabha Phongsri 1 January 1881 4 January 1895[2] 23 October 1910
(ascension)
Maha Vajiralongkorn
(later King Rama X)		 Only son of King Rama IX 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

Crown Prince Maha Vajirunhis		 Heir apparent Eldest son with queens[lower-alpha 1] 14 January 1886 New creation 4 January 1895 Died of typhoid Prince Vajiravudh, Prince of Ayutthaya
1886–1895, younger half-brother		 Rama V

Crown Prince Maha Vajiravudh		 Heir apparent Third son with queens[lower-alpha 2] 4 January 1895 Elder half-brother died 23 October 1910 Father died; became king Prince Chakrabongse Bhuvanath, Prince of Phitsanulok
1895–1910, younger brother

Prince Chakrabongse Bhuvanath, Prince of Phitsanulok		 Heir presumptive Younger brother 23 October 1910 Elder brother became king 13 June 1920 Died of pneumonia Prince Asdang Dejavudh, Prince of Nakhon Ratchasima
1910–1920, younger brother		 Rama VI

Prince Asdang Dejavudh, Prince of Nakhon Ratchasima		 Heir presumptive Younger brother 13 June 1920 Elder brother died 9 February 1924 Died of nephrosis Prince Chudadhuj Dharadilok, Prince of Phetchabun
1910–1923, younger brother
Prince Varananda Dhavaj Chudadhuj
1923–1924, nephew

Prince Varananda Dhavaj Chudadhuj		 Heir presumptive Nephew 9 February 1924 Uncle died 2 September 1924 Skipped by the royal command[lower-alpha 3][5] Prince Prajadhipok Sakdidej, Prince of Sukhothai
1924, uncle

Prince Prajadhipok Sakdidej, Prince of Sukhothai		 Heir presumptive Younger brother 2 September 1924 Nephew was skipped 25 November 1925 Elder brother died; became king Prince Mahidol Adulyadej, Prince of Songkla
1924–1925, elder half-brother

Prince Mahidol Adulyadej, Prince of Songkla		 Heir presumptive Elder half-brother 25 November 1925 Younger half-brother became King 24 September 1929 Died of pneumonia Prince Ananda Mahidol
1925–1929, eldest son		 Rama VII

Prince Ananda Mahidol		 Heir presumptive Half-nephew 24 September 1929 Father died 2 March 1935 Abdication of half-uncle; became king Prince Bhumibol Adulyadej
1929–1935, younger brother

Prince Bhumibol Adulyadej		 Heir presumptive Younger brother 2 March 1935 Elder brother became King 9 June 1946 Elder brother died; became King Prince Paribatra Sukhumbandhu, Prince of Nakhon Sawan
1935–1944, half-uncle		 Rama VIII
Prince Chumbhotbongs Paribatra
1944–1946, half-first cousin

Prince Chumbhotbongs Paribatra, Prince of Nakhon Sawan II		 Heir presumptive Half-first cousin 9 June 1946 Half-first cousin became king 28 July 1952 Son born to king Prince Sukhumabhinanda
1946–1952, half-brother		 Rama IX

Crown Prince Maha Vajiralongkorn		 Heir apparent Only Son 28 July 1952 Born 13 October 2016 Father died; became King Prince Chumbhotbongs Paribatra, Prince of Nakhon Sawan II
1952–1959, half-first cousin once removed
Prince Sukhumabhinanda
1959–1974, half-first cousin once removed
Princess Maha Chakri Sirindhorn, Princess Royal
1974–1978, younger sister
Princess Bajrakitiyabha
1978–1979, only daughter
Prince Juthavachara Mahidol
1979–1997, eldest son
Princess Bajrakitiyabha
1997–2005, eldest daughter[lower-alpha 4]
Prince Dipangkorn Rasmijoti
2005–2016, only recognised son

Prince Dipangkorn Rasmijoti

 Heir presumptive Only recognised son[lower-alpha 5] 13 October 2016 Father became king
Incumbent
 Princess Bajrakitiyabha, Princess Rajasarini Siribajra
2016–present, elder half-sister		 Rama X
  1. Crown Prince Maha Vajirunhis, eighth son of Rama V and eldest son of Savang Vadhana.
  2. Crown Prince Maha Vajiravudh, eleventh son of Rama V and eldest son of Saovabha Phongsri. Prince Isariyalongkorn, second son with queens, ninth son of Rama V and second son of Savang Vadhana, died 21 days after birth.
  3. Prince Varananda Dhavaj Chudadhuj was skipped because his mother is a low-class commoner.
  4. Prince Juthavachara, Prince Vacharaesorn, Prince Chakriwat, and Prince Vatchrawee was degraded from royalty.
  5. Prince Dipangkorn Rasmijoti, fifth son of 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.
  5. "การสืบราชสันตติวงศ์โดยราชสกุล "มหิดล"".

Bibliography
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