Public Family Trees/Chakri Dynasty/Rama IV (Mongkut) Chakri

King of Siam (Rama IV); Buddhist monk

Rama IV (Mongkut) Chakri

1804 - 1868 Β· Male Β· Bangkok, Siam

Son of Rama II (Buddha Loetla Nabhalai) Chakri and Sri Suriyendra Chakri

3

Generation

4

Ancestors

10

Descendants

1

Children

1

Marriages

Biography

Mongkut, known as Rama IV, reigned as King of Siam from 1851 to 1868. Born in 1804, the son of Rama II and Queen Sri Suriyendra, he spent 27 years as a Buddhist monk, rising to become a respected scholar of Pali scripture, science, and Western languages, before his accession at age 47 following the death of his half-brother Rama III. As king he opened Siam to Western trade and diplomacy through treaties including the…

Life Timeline

Born1804

Born

Born to Rama II (Buddha Loetla Nabhalai) Chakri, Sri Suriyendra Chakri.

Family

Married Debsirindra Chakri

A partnership that connects two branches of the Chakri Dynasty family.

Next Generation

Family line continues

1 child recorded in this branch.

Legacy

King of Siam (Rama IV); Buddhist monk

A defining role in the story of the Chakri Dynasty family.

Died1868

Died

The close of a life whose connections continue through the family record.

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Rama VIII (Ananda Mahidol) Chakri

Gen 6 Β· 1925 - 1946

Ananda Mahidol, known as Rama VIII, was King of Thailand from 1935 to 1946. Born in Heidelberg, Germany in 1925, the elder son of Prince Mahidol Adulyadej and Srinagarindra, he was still a schoolboy in Switzerland when he inherited the throne at age nine following his uncle Prajadhipok's abdication, and a regency governed in his name for most of his reign. He returned to Thailand only briefly as an adult before his sudden death at the Grand Palace in Bangkok in June 1946, at age twenty. He was succeeded by his younger brother, Bhumibol Adulyadej, as Rama IX.

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Rama IX (Bhumibol Adulyadej) Chakri

Gen 6 Β· 1927 - 2016

Bhumibol Adulyadej, known as Rama IX, reigned as King of Thailand from 1946 until his death in 2016, the longest reign of any Thai monarch. Born in Cambridge, Massachusetts in 1927, the younger son of Prince Mahidol Adulyadej and Srinagarindra, he succeeded his elder brother Ananda Mahidol at age eighteen. Over seven decades he became a unifying figure through repeated political upheavals, sponsoring thousands of rural development projects on poverty, agriculture, and water management. He married Sirikit in 1950, and their four children were Ubolratana, Vajiralongkorn (later Rama X), Sirindhorn, and Chulabhorn. He died in Bangkok in 2016.

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πŸ‘©

Ubolratana Chakri

Gen 7 Β· b. 1951

Princess Ubolratana Rajakanya is the eldest child of King Bhumibol Adulyadej and Queen Sirikit, and the elder sister of King Vajiralongkorn (Rama X). Born in Lausanne, Switzerland in 1951, she gave up her royal titles in 1972 upon marrying an American, Peter Ladd Jensen, and lived in the United States for over two decades, working as an actress and businesswoman. Following her divorce, she returned to live in Thailand in the early 2000s and resumed an active public role in royal family events, though without reinstating her full royal title. She has remained largely engaged in charitable and film-related work.

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Rama X (Vajiralongkorn) Chakri

Gen 7 Β· b. 1952

Maha Vajiralongkorn, known as Rama X, has reigned as King of Thailand since 2016, succeeding his father Bhumibol Adulyadej. Born in Bangkok in 1952, the only son of Bhumibol and Queen Sirikit, he was educated in Australia and the United Kingdom and trained as a military pilot before being formally named Crown Prince in 1972. He assumed the throne after a period of mourning following his father's death, and was formally crowned in a traditional ceremony in 2019. He has been married several times; his current wife, since 2019, is Queen Suthida. He is the tenth monarch of the Chakri dynasty.

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Sirindhorn Chakri

Gen 7 Β· b. 1955

Princess Maha Chakri Sirindhorn is the second daughter of King Bhumibol Adulyadej and Queen Sirikit, and a younger sister of King Vajiralongkorn (Rama X). Born in Bangkok in 1955, she pursued advanced academic studies in history, Pali, and Oriental languages, and has long been regarded as one of the most publicly active and popular members of the Thai royal family for her work in education, rural development, and disaster relief. In 1977 she was granted the special title Maha Chakri, elevating her standing among the royal children. She has never married and remains a full-time working member of the royal family.

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Chulabhorn Chakri

Gen 7 Β· b. 1957

Princess Chulabhorn Walailak is the youngest child of King Bhumibol Adulyadej and Queen Sirikit, and a younger sister of King Vajiralongkorn (Rama X). Born in Bangkok in 1957, she trained as a scientist, earning a doctorate in organic chemistry, and has spent much of her career researching cancer and pesticide chemistry, founding the Chulabhorn Research Institute in Bangkok in 1987. Unlike her siblings, she has pursued an active scientific and academic career alongside her royal duties, representing Thailand at international science forums, and has also been involved in veterinary medicine and the arts.

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Saovabha Phongsri Chakri

Gen 4 Β· 1863 - 1919

Queen Saovabha Phongsri was a consort of King Rama V (Chulalongkorn) and one of the most influential royal women of the Chakri dynasty. Born in 1863, she was both a half-sister and a wife of the king, a marriage pattern then customary among Siamese royalty, and bore him numerous children, including three future kings: Vajiravudh (Rama VI), Prajadhipok (Rama VII), and, through their son Prince Mahidol Adulyadej, the grandfather of Rama VIII and Rama IX. In 1897 she served as regent of Siam while Chulalongkorn undertook his first state visit to Europe, becoming the first woman to formally head the Siamese government. She died in 1919.

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Srinagarindra Chakri

Gen 5 Β· 1900 - 1995

Srinagarindra, born Sangwan Talapat and known in her lifetime as the Princess Mother, was the wife of Prince Mahidol Adulyadej and mother of two kings, Ananda Mahidol (Rama VIII) and Bhumibol Adulyadej (Rama IX). Born a commoner in 1900, she trained as a nurse before marrying Mahidol in 1920. Widowed in 1929, she raised her children largely in Switzerland during their education. In her later decades she became widely known in Thailand for founding rural health, education, and forest-conservation programs, earning the popular title Mae Fah Luang, royal mother from the sky, for her work reaching remote hill communities. She died in 1995.

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Sri Sulalai Chakri

Gen 2 Β· 1770 - 1837

Somdet Phra Sri Sulalai (born Riam) was a royal consort of King Rama II and mother of his eldest surviving son, Prince Jessadabodindra, who reigned as Rama III. Born around 1770 near Nonthaburi, she came from a family involved in the court's confectionery service rather than high nobility, and never held the rank of queen. Her son's accession in 1824, chosen by the Accession Council over more senior-born half-brothers including the future Rama IV, made her one of the most consequential royal mothers of the early Bangkok era. She was posthumously honored with the title Somdet Phra Sri Sulalai. She died in 1837.

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Living
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Sirikit Chakri

Gen 6 Β· b. 1932

Queen Sirikit is the widow of King Bhumibol Adulyadej (Rama IX) and mother of King Vajiralongkorn (Rama X). Born Mom Rajawongse Sirikit Kitiyakara in Bangkok in 1932 to an aristocratic diplomatic family, she met the young king while he was studying in Switzerland and married him in 1950, becoming queen consort the same year. During his reign she championed rural handicrafts, traditional Thai silk weaving, and conservation projects across the country through the SUPPORT Foundation she established. She and Bhumibol had four children: Ubolratana, Vajiralongkorn, Sirindhorn, and Chulabhorn. She holds the title Queen Mother.

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Rambhai Barni Chakri

Gen 5 Β· 1904 - 1984

Queen Rambhai Barni was the wife of King Rama VII (Prajadhipok), the last absolute monarch of Siam. Born a granddaughter of Rama IV in 1904, she married the future king in 1918 and became queen consort upon his accession in 1925. She accompanied him through the political upheaval of the 1932 revolution and his 1935 abdication, living with him in exile in England until his death in 1941. She had no children and returned permanently to Thailand after the Second World War, devoting her later years to charitable and educational causes until her death in 1984.

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Frequently Asked Questions

Who were Rama IV (Mongkut) Chakri's parents?+

Rama IV (Mongkut) Chakri's recorded parents are Rama II (Buddha Loetla Nabhalai) Chakri, Sri Suriyendra Chakri.

Who were Rama IV (Mongkut) Chakri's children?+

Rama IV (Mongkut) Chakri has 1 recorded child: Rama V (Chulalongkorn) Chakri.

Who did Rama IV (Mongkut) Chakri marry?+

Rama IV (Mongkut) Chakri married Debsirindra Chakri.

Who were Rama IV (Mongkut) Chakri's siblings?+

Rama IV (Mongkut) Chakri has 1 recorded sibling: Rama III (Nangklao) Chakri.

What did Rama IV (Mongkut) Chakri do?+

Rama IV (Mongkut) Chakri is recorded as King of Siam (Rama IV); Buddhist monk in the Chakri Dynasty family tree.

Where was Rama IV (Mongkut) Chakri from?+

Rama IV (Mongkut) Chakri's recorded native place is Bangkok, Siam.

How many relatives of Rama IV (Mongkut) Chakri are recorded?+

4 ancestors and 10 descendants of Rama IV (Mongkut) Chakri are recorded so far, within a tree of 23 people.

How is Rama IV (Mongkut) Chakri related to Rama I (Buddha Yodfa Chulaloke) Chakri?+

Rama IV (Mongkut) Chakri is recorded as Rama I (Buddha Yodfa Chulaloke) Chakri's Grandson.

What family tree does Rama IV (Mongkut) Chakri belong to?+

Rama IV (Mongkut) Chakri is recorded in the Chakri Dynasty family tree on My rOoOts, alongside 22 other people.

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