| Asdang Dejavudh | |||||
| Prince of Nakhon Ratchasima | |||||
| Succession: | Director-General of the Royal Siamese Navy
| ||||
| Birth Date: | 12 May 1889 | ||||
| Birth Place: | Bangkok, Siam | ||||
| Death Place: | Bangkok, Siam | ||||
| Spouse: | Paew Suddhiburana | ||||
| House: | Chakri dynasty | ||||
| Father: | Chulalongkorn (Rama V) | ||||
| Mother: | Saovabha Phongsri | ||||
Asdang Dejavudh, Prince of Nakhon Ratchasima (Thai: อัษฎางค์เดชาวุธ;, 12 May 1889 – 9 February 1925) was a son of King Chulalongkorn and Queen Saovabha Phongsri of Siam. He was given nickname as Eiad-lek or Prince Eiad-lek (Thai: เอียดเล็ก) and best known in the palace by his nickname of "Thunkramom Eiad-lek".
Prince Asdang Dejavudh was born on 12 May 1889 to King Chulalongkorn and Queen Saovabha Phongsri. When the prince was three-years old in 1891, he began suffering from a disease which doctors said could not be cured if the prince stayed in Bangkok. For that reason, Chulalongkorn brought Asdang Dejavudh to the island of Ko Sichang off the coast of modern-day Chonburi province. Chulalongkorn had previously brought another son, Prince Vajiravudh, when he was seven to recover from another illness.[1] Asdang Dejavudh spent several months on Ko Sichang before he got well again.[2] To celebrate his son's recovery, Chulalongkorn built the Asdang Bridge near the Phra Chuthathut Palace on the island.[3] The bridge's royal opening ceremony was held on 23 August 1891 after construction began on 10 August.[4]
On 5 July 1903 at age 14, Asdang Dejavudh entered monkhood. In 1905, he was sent to England for his education along with his brother Chudadhuj Dharadilok, and half brother Mahidol Adulyadej. Asdang Dejavudh however did not stay long in England and went to Singapore for education. He returned to Siam in 1908 and entered the Siamese Military Academy.[5]
After the death of his older half-brother, Prince Chakrabongse Bhuvanath in 1920, he became the heir presumptive to his brother King Vajiravudh. Asdang Dejavudh however never became King of Thailand as he died on 9 February 1925 from kidney disease, 9 months and 17 days before King Vajiravudh died, being succeeded instead by their younger brother Prajadhipok.[6]