From Wikipedia (tidak diedit)
Ramathibodi I (b. 1314, d. 1369) was the first king of the kingdom Ayutthaya (now part of Thailand), reigning from 1351 to 1369. He was known as Prince U Thong before he ascended to the throne on March 4, 1351. A native of Chiang Saen (now in Chiang Rai Province) he claimed descent from Khun Borom and propagated Theravada Buddhism as the state religion.
Scholar Charnvit Kasetsiri hypothesized that U Thong might have actually been born to a Chinese merchant family operating in the area of Phetburi. At least one royal chronicle identifies U Thong as the son of one Chodüksethi, apparently a leader of the Chinese merchant community.
New information from Kedah, Malaysia clearly state Rama Tibodi I by his Muslim name of Sultan Mad Zafar Syah III ruler of the Siamese Kedah Pasai Ma, probably part of the Ayuthaya Empire or by its Muslim name. Records in Iran state that he has in his royal court a Muslim scholar known as Sheikh Ahmad Qomi. He is the son-in-law of Chinese Siamese Muslim King descendent by the name of Nayuan (Bee Father). A golden coin with his name inscribe on it has been found in the island of Langkawi and is now kept in the Kedah State Museum.
During his reign he built Ton Sun Khlong Tue Mosque in Bangkok which still stand today. Apart from that France still have records in the form of a map of 21 Mosque built in Ayutthaya during his reign and known as Shari Nao. The Mosques however were destroyed during the invasion by Sukhotai of Myanmar. Meanwhile local villages in Kedah people still speak Siam daily, a language spoken by their former King. The Siam (Muslim) language is different from the Thai language although they are very similar.
Apart from the above information, various tomb of Ayuthia Kings such as Rama Tibodi II is located in Kubang Pasu Kedah. The tombstone is inlaid with Ayyuthians decorative motives, shape as per alphabet 't'. The tomb of Rama Tibodis II son, Khun Woran Wang Ser is also located in Alor Setar, Kedah. His decsendent lives in Kedah and carries the title Nai Long before their given names.
Ramathibodi's position was likely secured by political marriage and family ties. He was married to a daughter of the ruling family of Suphanburi, and may have also married into an alliance with the rulers of Lopburi - it was likely the king of Lopburi that he was initially chosen to succeed. He appointed both his brother-in-law and son to positions of leadership in Suphanburi and Lopburi, respectively, and established his own capital in the new city of Ayutthaya. Ramathabodi's reign bound together the Khmer rulers of Lopburi, the Tai in the west, and the Chinese and Malaysian merchants who inhabited the coastal areas.
Ramathibodi's death sparked a conflict over succession; initially, his son Ramesuan became ruler of Ayutthaya, but Ramesuan later abdicated in favor of Ramathibodi's brother-in-law, Borommaracha. Some sources indicate that the abdication occurred peacefully, while others indicate that Ramesuan's abdication followed a bloody civil war.
• Wyatt, David K., Thailand: A Short History, New Haven (Yale University), 2003. ISBN 0-300-08475-7
• Associate Professor Srisak Vallipodom, Sheikh Ahmad Qomi and the History of Siam, Cultural Center of the Islamic City, Republic of Iran, Bangkok 1995, page 209
• Assoc Professor Plubplung Kongchana, "The Persians in Ayutthaya", Director, Institiute of Asia Pacific Studies, Srinakharinwirot University.
• Tuanku Nai Long Kassim ibni Almarhum Tunku Nai Long Ahmad, "Islamic Epigrafi–The King of Ayuthia Dynasty Kedah Pasai Ma Gangga Nagara"