|Princess of Thailand|
Princess Ubol Ratana (2010)
5 April 1951 |
|Spouse||Peter Ladd Jensen
(m. 1972; div. 1998)
|House||Mahidol (Chakri Dynasty)|
|Father||Bhumibol Adulyadej (Rama IX)|
Princess Ubolratana (Thai: อุบลรัตน; rtgs: Ubonrat; Thai pronunciation: [ʔù.bon.rát]; born 5 April 1951 in Lausanne, Switzerland), or full name Ubolratana Rajakanya Sirivadhana Barnavadi (Thai: อุบลรัตนราชกัญญา สิริวัฒนาพรรณวดี; rtgs: Ubonrat Ratchakanya Siriwatthana Phannawadi), is a princess of Thailand and the eldest child of King Bhumibol Adulyadej and Queen Sirikit. She relinquished her royal title and settled in the United States with her husband, Peter Ladd Jensen, but returned to Thailand after divorcing in 1998.
After many visits to Thailand after her divorce, In 2001 she permanently return to Thailand for good. Almost immediately after her royal return, Ubolratana began her royal duties by taken part in many royal ceremonies. She started many charity foundations aim to improve the quality of life for the Thai People.  Her most successful and very well received and highly publicized and supported by the media and the Thai people is her 'To Be Number One' Foundation. Founded in 2007, 'To Be Number One' is the 'say-no-to-drugs' empowerment program aim to educate the Thai Youth to stay away from drugs. Realizing that pop culture is the fastest and most effective way to reach Thai Youth everywhere and to raise funds for her charity foundations, she agreed to make special appearances in the leading role for many Thai Films and Television Mini-series since 2008. Her most notable efforts includes the 2008 film Where the Miracle Happens and primetime television mini-series 'Dow Long Fah, Pupa See Ngern' (Ch. 3, 2017). 
Princess Ubolratana Rajakanya is the eldest child of King Bhumibol Adulyadej and Queen Sirikit. She was born on 5 April 1951 at Mont Suisse Hospital in Lausanne, Switzerland. She returned to Thailand and stayed at Ambhornsathan Throne Hall, Dusit Palace. She was styled Her Royal Highness by her father at the Royal Celebration of the first month birthday ceremony (Phra Ratchaphithi Somphot Duean Lae Khuen Phra U; พระราชพิธีสมโภชเดือนและขึ้นพระอู่) King Bhumibol Adulyadej gave her name and style Her Royal Highness Princess Ubolratana Rajakanya Sirivadhana Barnavadi. Her names are derived from several royal ancestors:
She has taken part in royal duties since she was very young.
In 4th SEA Games in 1967 in Bangkok, the King and Princess Ubolratana Rajakanya competed in sailing and won gold medals.
Ubol Ratana attended primary to secondary levels at Chitralada School. She went to the United States for her tertiary education. She studied at MIT, graduating with a Bachelor of Science in mathematics in 1973. She later obtained a master's degree in public health at University of California at Los Angeles.
While at MIT she first met Peter Ladd Jensen, whom she later married.
On 25 July 1972, Ubol Ratana relinquished her royal titles to marry Jensen, then lived in the United States with her husband for over 26 years. Her husband, as a foreigner, did not receive any royal titles. After years of rumoured marital problems, they divorced in 1998. Ubol Ratana and her children lived in San Diego until 2001, when they returned to Thailand.
Ubol Ratana and Peter Ladd Jensen had three children: two daughters and a son, all born in the United States.
While Ubolratana Rajakanya Jensen remained in the U.S., her mother Queen Sirikit and other members of the Royal Family often flew to the United States for visits. Ubol Ratana likewise flew to Thailand along with her husband to visit her parents and the other members of the Royal Family, while joining them in royal ceremonies when she visited Thailand. She visited in 1980, 1982, 1987, 1992 and 1996, taking part in several family events, before her permanent return in 2001.
Princess Ubolratana Rajakanya of Thailand
|Reference style||Her Royal Highness|
|Spoken style||Your Royal Highness|
Ubol Ratana was born with the titles of Her Royal Highness and Princess Chao Fa, but gave these up on her marriage to an American citizen. The title Chao Fa was lost because she married a commoner. She had previously held the royal title Chao Fa Ubolratana Rajakanya. She still retains the style of Tunkramom Ying, which means "Daughter to the Queen Regent". Since her return to Thailand, she has increasingly taken part in royal ceremonies, though not to the extent of her siblings.
Ubol Ratana acted in the Thai movie Where The Miracle Happens (หนึ่งใจ..เดียวกัน), released in August 2008. She plays the drama's main role of a lonely-at-the-top CEO who begins a life of philanthropy after the death of her only daughter. On October 2010, she appeared in the film My Best Bodyguard (มายเบสต์บอดีการ์ด).
|Ancestors of Ubol Ratana|
Ubol RatanaBorn: 5 April 1951
|Order of precedence|
Princess Chulabhorn Walailak
|The Royal Sister
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