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The known history of the monarchy of Thailand begins with the founding of the Sukhothai Kingdom, inaugurated by Si Inthrathit in 1238. This was succeeded by the Ayutthaya Kingdom and the short-lived Thonburi Kingdom. The present reigning dynasty, the Chakri Dynasty, took the throne in 1782, founding the Rattanakosin Kingdom. The present-day constitutional monarchy was established in 1932. The Chakri kings are often known as Rama: the reigning monarch is King Rama X (Vajiralongkorn).

Family tree

Si Inthrathit
1188–1270
r. 1238–1270
Sueang
Ban Mueang
?–1271
r. 1270–1271
Ram
Khamhaeng

~1237/47–1298
r. 1279–1298
Ngua
Nam Thum

?–1347/48
r. 1323/24–
1347/48
Loe Thai
?–1323
r. 1298–1323
May Hnin
Thwe-Da

~1250s–?
Wareru
K. of Martaban
1253–1307
r. 1287–1307
Hnin U
Yaing

~1260s–1310s
Uthong
1314–1369
r. 1350 to 1369
Baromaraja I
?–1388
r. 1370–1388
PrincessLithai
?–1368
r. ~1347–1368
Saw O
K. of Martaban
1283–1323
r. 1311–1323
May Hnin
Htapi

Chief queen
Saw Zein
K. of Martaban
1303–1330
r. 1323–1330
Ramesuan
1339–1395
r. 1369–1370;
1388–1395
Thong Lan
1373/74-
1388/89
r. 1388/89
Intharacha I
1359–1424
r. 1409–1424
PrincessLuethai
?–1399
1368–1399
Ramracha
1356/57–?
r. 1395/96–
1409/10
Chao Sam
Phraya

?–1448
r. 1424–1448
DeviSaileuthai
?–1400
1400–1419
Trailok
1431–1488
r. 1448–1488
Boromapan
?–1438
1419–1438
Phaya Ram
IntharachaBoromma
Racha III

?–1491
r. 1488–1491
Ramathibodi II
1473–1529
r. 1491–1529
Worawongsa
Thirat

?–1548
r. 1548
Sri
Sudachan

?–1548
Chairacha
?–1546
r. 1534–1546
Borommaracha
Thirat IV

?–1533
r. 1529–1533
Maha
Chakkraphat

1509–1569
r. 1548–1564;
1568–1569
Suriyothai
1511–1548
Yotfa
1536–1548
r. 1546–1548
Srisin
1541–1560
Ratsadathirat
1528/29–1534/35
r. 1533/34–1534/35
Boromdilok
?–1549
Thepkasattri
Sanphet I
1514–1590
r. 1569–1590
WisutkasatMahinthrathirat
1539–1569
r. 1564–1568;
1569
Ramesuan
?–1564
Bayinnaung
K. of Toungoo
1516–1581
r. 1550–1581
SuphankanlayaChao Khrua
Manichan
Naresuan
1555/56–1605
r. 1590–1605
Sanpet III
1556–1620
r. 1605–1620
Okya Sri
Thammathirat
Sanphet IV
?–1620
r. 1620
Songtham
1590–1628
r. 1620–1628
Sanphet VII
?–1656
r. 1656
?
Chetthathirat
~1613–1629
r. 1628–1629
Athittayawong
1618–?
r. 1629
SirithidaPrasat
Thong

~1600–1656
r. 1629–1656
Siri
Kanlayani
Narai
1633–1688
r. 1656–1688
Suriyong
Ratsami
Chai
?–1656
r. 1656
Kusawadi
of Chiang Mai
Phetracha
1632–1703
r. 1688–1703
Sudawadi
Princess
Yothathep
1656–1735
Srisuphan
Princess
Yothathip
1636–1706
Sanphet VIII
1661–1709
r. 1703–1709
Rattana
Thongsuk
Princess
Rachanurak
Thai Sa
?–1732
1709–1733
Khao
Princess
Aphainuchit
Borommakot
1680–1758
r. 1733–1758
Phlap
Princess
Phiphitmontri
Prince
Noren
Thammathibet
?–1756
Ekkathat
?–1767
r. 1758–1767
MaoliUthumphon
?–1796
r. 1758
Vimolphakdi
Phra Aksorn Sundhornsartra
(Thongdi Chakri)
1702–1769
Prince Father
Yok
Princess Mother
Yong
Saetae
Nok Iang
?–1774
Princess Mother
Sri Anocha
of Lampang
1750–1821
Maha
Sura Singhanat

Viceroy
1744–1803
t. 1782–1803
Nak
na Bangxang
1737–1826
Queen
Buddha Yodfa
Chulaloke
(Rama I)

1737–1809
r. 1782–1809
Nui Yai
of Nakhon Si Thammarat
?–1828
Concubine
Sa
Princess Thepsuthavadi
?–1799
Phra Intraraksa
(Sem)
House of Maha Sura Singhanat
Son
Queen
Taksin
(Sanphet X)

1734–1782
r. 1767–1782
Chimyai
 ?–1779
Concubine
Maha
Senanurak

Viceroy
1773–1817
t. 1809–1817
Praphaivadi
Princess
Depayavadi
1777–1823
Chaem
Krachangfaa
Princess Sri
Sundhorndep
1770–1808
House of Rama IMaha Sakdi
phonlasep

Viceroy
1773–1832
t. 1824–1832
ThongyuAnurak
Devesh

Deputy Viceroy
1746–1806
t. 1786–1806
Inthraphithak
Viceroy
?–1782
t. ?–1782
Abhaya
Dhibesra
Prince
Krashatra
Nujit
1779–1809
House of Maha Senanurakfive other
unnamed
children
Riam
1770–1837
Concubine
Buddha
Loetla
Nabhalai
(Rama II)

1767–1824
r. 1809–1824
Bunrot
1767–1836
Queen
House of Maha SakdiphonlasepHouse of Anurak Devesh
House of Rama II
Bang
Concubine
Nangklao
(Rama III)

1787–1851
r. 1824–1851
Sab
Concubine
Noo Dam
1792–1793
Pom
1791–1793
Pinklao
Viceroy
1808–1866
t. 1851–1866
Aim
Sae-ong
Concubine
House of Rama IIIHouse of Pinklao
Lakkhananukhun
1814–1835
Ngiew
Suwannathat
Siriwongse
Prince
Mataya
Bitaksa
1812–1839
NoiLamom
Princess
Sudaratana
Rajaprayura
1818–1896
Wichaichan
Viceroy
1838–1885
t. 1868–1885
House of Wichaichan
Somanas
Vadhanavadi

1834–1852
Queen
Samli
Bunnag
1835–1900
Concubine
Ramphoei
Sirivongse
1834–1862
Queen
Mongkut
(Rama IV)

1804–1868
r. 1851–1868
Piam
Sucharitakul
1838–1904
Concubine
Bung
Indravimol
Concubine
House of Rama IV
Somanas
1852–1852
Sukhumala
Marasri

1861–1927
Queen
Chulalongkorn
(Rama V)

1853–1910
r. 1868–1910
Saovabha
Phongsri

1864–1919
Queen
Sunandha
Kumariratana

1860–1880
Queen
Sun
1895–1949
Gagananga
Yukala

Prince Bijit
Prijakorn
1855–1909
House of Rama V
Paribatra
Sukhumbandhu

Prince of
Nakhon Sawan
1881–1944
Suddha
Dibyaratana

Princess of
Rattanakosin
1877–1922
Kannabhorn
Bejaratana

1878–1880
Svasti Sobhana
Prince Svastivatana Visishtha
1865–1935
Abhabarni
1874–1938
Savang
Vadhana

1862–1955
Queen
Aum
Pisolyabutr
1856–1877
Concubine
Yai
Sucharitakul
1858–1936
Devan
Udayawongse

Prince
Devawongse
Varopakarn
1858–1923
Prajadhipok
(Rama VII)

1893–1941
r. 1925–1935
Rambai Barni
Svastivatana
1904–1984
Queen
Vajirunhis
Crown Prince
1878–1895
Mahidol
Adulyadej

Prince of Songkla
1892–1929
Prince Father
Sangwan
Talapat
1900–1995
Princess Mother
Kitiyakara
Voralaksana

Prince of
Chanthaburi I
1874–1931
Absara Samarn
Devakula
1877–1939
Chakrabongse
Bhuvanath

Prince of Phitsanulok
1883–1920
Hereditary Prince
Asdang
Dejavudh

Prince of
Nakhon Ratchasima
1889–1924
Hereditary Prince
Vajiravudh
(Rama VI)

1881–1925
r. 1910–1925
Suvadhana
Abhayavongsa
1905–1985
Princess Consort
Aram
Rattanakul
Serireongrit
1920–1982
Galyani
Vadhana

Princess of
Naradhiwas
1923–2008
Ananda
Mahidol
(Rama VIII)

1925–1946
r. 1935–1946
Nakkhatra
Mangala

Prince of
Chanthaburi II
1897–1953
Bua
Snidvongse
1909–1999
Praphai
Sucharitakul
1902–1975
Princess Consort
Bejaratana
Rajasuda

1925–2011
Dasanavalaya
Rattanakul
Serireongrit
1945–
Sinthu
Sornsongkram
1940–
Bhumibol
Adulyadej
(Rama IX)

1927–2016
r. 1946–2016
Sirikit
Kitiyakara
1932–
Queen
Adulakit
Kitiyakara
1930–2004
Bandhusavali
Yugala
1934–
Busba
Kitiyakara
1934–
Kalyanakit
Kitiyakara
1929–1987
Jessica
Mickelich
Jitas
Sornsongkram
1974–
Peter Ladd
Jensen
1951–
Ubolratana
Rajakanya

1951–
Sirindhorn
Princess Royal
1955–
Srali
Kitiyakara
1966–
Sornsongkram family
David
Wheeler
Ploypailin
Jensen
1981–
Poom
Jensen
1983–2004
Sujarinee
Vivacharawongse
1962–
Vajiralongkorn
(Rama X)

1952–
r. 2016–
Srirasmi
Suwadee
1971–
Soamsawali
Princess Suddhanarinatha
1957–
Chulabhorn
Walailak

Princess Srisavangavadhana
1957–
Virayudh
Tishyasarin
1955–
Wheeler family
Sirikitiya
Jensen
1985–
Juthavachara
Vivacharawongse
1979–
Vacharaesorn
Vivacharawongse
1981–
Chakriwat
Vivacharawongse
1983–
Dipangkorn
Rasmijoti

2005–
Suthida
Vajiralongkorn na Ayudhaya
1978–
Queen
Bajra
Kitiyabha

Princess Rajasarinisiribajra
1978–
Adityadhorn
Kitikhun

1984–
Siribha
Chudhabhorn

1982–
Riya
Gough
Vatchrawee
Vivacharawongse
1985–
Sirivannavari
1987–

References