Prince Benbadhanabongse was born on 13 September 1882, in the compound of the Grand Palace, Bangkok. He was the 38th of King Chulalongkorn and The Noble Consort Morakot Phenkul, daughter of Lord Mahindrasakdi Dhamrong and Dame Hunn Phenkul. He had an elder sister; Princess Chudharatana Rajakumari. He graduated from the agricultural studies from United Kingdom in 1903, while he was only 19 years old. After graduating, he began working as the secretary officer, Ministry of Education. In 1902, King Chulalongkorn promoted the country's silk-silverware and weaving industry. He hired Dr. Kametaro Toyama from University of Tokyo, for teaching and training Siamese students to do the academic silk and weaving activities in the way of the Japanese culture. He trained the student of taking care of the silk-pillows, which ready for weaving. King Chulalongkorn established the Silk-weaving pillow Station in the sub-district of Sala-Daeng, which let to be in control of the Ministry of Education. Later on 30 September 1903, the ministry included the productive division, the division of animal husbandry, and the silk-weaving pillow station, created as Department of silk tectnecians. Prince Benbadhanabongse became the first director of the department. The main responsibility of the Department of silk technicians was on the project of the School of Sericulture, which was established in November 1903 at Dusit Palace. On 16 January 1904, there was another School of Sericulture in Pathum Wan, for the purpose of creating a specialist research and training of Thai employees. Later this school developed into the current Kasetsart University. Prince Benbadhanabongse was given the royal title from his father as Kromma Muen Phichai Mahintharodom, or translated as The Prince of Phichai on 2 October 1904. He was given the rank of Kromma Meun, the fifth level of the Krom ranks.
Prince's life
Prince Benbadhanabopngse was interested in the Thai music instruments. He was able to play almost every type of musical instrument. He created the Thai classical music band Prince Ben's band. After returning from England, he visited Chiang Mai. He met the Chiang Mai princess, Princess Chomchuen of Chiang Mai, daughter of Prince Sambandhavongse Dharmalanka of Chiang Mai and Princess Ghamyon of Lamphun. They began a relationship. Then he requested the governor of Chiang Mai to negotiate with Prince Sambandhavongse about the marriage possibility. But the proposal had been rejected. Prince Sambandhavongse did not allow his daughter to be married with the Siamese prince. So they did not have a chance to get married. This brought about profound sadness to the prince. He began composing the song called, Lao Duang Duen in loving memory to his loved one. He always performed this song whenever he missed the Princess of Chiang Mai. Later King Chulalongkorn prepared the marriage between the Prince and Princess Vanna Vilaya Kritakara, daughter of Krisdabhinihara, Prince Nares Voraridhi on 30 June 1903. The couple had 2 children;
Princess Barnabenkhae Benbadhana later relinquished the royal title, and married Mom Rajawongse Banluesakdi Kritakara, had a son and 2 daughters
Prince Baobenbadhana Benbadhana married Mom Luang Bochitra Patamasingha, had 2 sons.