1. Purachatra Jayakara, Prince of Kamphaengphet was a Prince of Siam and a member of the Siamese Royal Family.

1. Purachatra Jayakara, Prince of Kamphaengphet was a Prince of Siam and a member of the Siamese Royal Family.
Purachatra Jayakara founded the House of Chatrajaya, his descendants still use this royal surname.
Purachatra Jayakara was a son of King Chulalongkorn of Siam.
Purachatra Jayakara was often called the Father of the Thai radio and the Father of the Thai railways, due to his contributions in both fields.
Prince Purachatra Jayakara was born on 23 January 1881, in the compound of the Grand Palace.
Purachatra Jayakara was the 35th son of Chulalongkorn and Consort Wad.
Purachatra Jayakara began his education at Suankularb Wittayalai School, followed by attendance at Harrow School in 1894.
Purachatra Jayakara studied in France and Netherlands in the School of engineering of digging dam-canals.
Purachatra Jayakara became an officer of the Institution of Civil Engineers.
Purachatra Jayakara returned to Thailand in 1904, working as a military engineer and officer of the Siamese Royal Army.
Purachatra Jayakara developed the Siamese Department of Engineering militaries using knowledge gained from his Western education.
Purachatra Jayakara gave the Siamese railway offices in control of the foreigners, for administration in the railways system around Thailand.
Until his death in 1910, starting the new reign of King Vajiravudh, he requested his stepbrother, Prince Purachatra Jayakara to be the Head of the Northern railway department.
Purachatra Jayakara expanded the rail lines around the northern and southern territory.
Purachatra Jayakara purchased 2 180 horsepower diesel locomotives from Swiss Locomotive and Machine Works to use for local train around Bangkok in 1928, as the first country in Asia to do so.
Prince Purachatra Jayakara was responsibility for creating all the roads and bridges around the country, such as the Kasatsuk Bridge, Ratchadaphisek Bridge in Lampang Province, Phra Buddha Yodfa Bridge and Rama VI Bridge, the first bridge to cross Chao Phraya River.
Purachatra Jayakara brought the engine of searching crude oil, firstly in Fang District, Chiang Mai Province where the people there found many amounts of crude oil.
Purachatra Jayakara hired the American Geologist to work as surveying in geological system, for finding crude oil and coal around Thailand.
Purachatra Jayakara was the first to bring the communication system into the country.
Purachatra Jayakara set up a small radio for trial broadcasting and first broadcast in 1930.
Purachatra Jayakara established the first radio broadcasting station called Phayathai radio station.
Purachatra Jayakara was the first person of Siam to establishing the communication broadcasting system in the country.
Purachatra Jayakara considered about establishing the television broadcasting transmission, which would have made Siam the first country in Asia to experiment with television, and had contacted an American company to provide and install equipment; however, because of the Siamese Revolution of 1932, the project was cancelled.
Purachatra Jayakara created the communication services from Thailand to many foreign countries.
Purachatra Jayakara demonstrated flying, later acknowledged as the first Thai people embarking.
Purachatra Jayakara then established the flight operation systems business aviation, including the international aviation, for commercial aviation international services.
Purachatra Jayakara firstly married on 16 November 1904 with his cousin, Princess Prabhavasit Narumon, daughter of the Chaturonrasmi, the Prince Chakrabadibongse, King Chulalongkorn's younger brother.
Purachatra Jayakara secondly married with a Chiang Mai's princess, Chao Ladakham, had 2 daughters;.