Date of Birth: 
Place of Birth: Bangkok, Thailand
About Wichaichan
- Krom Phra Ratchawang Bowon Wichaichan (Thai: ???????????????????????) or Phra Ong Chao Yodyingyot (or Yingyot) (????????????????????) (6 April 1838 – 28 August 1885) was a Siamese Prince and member of the Chakri Dynasty.
- He was the eldest son of Vice King Pinklao and Princess Aim, and thus nephew to King Mongkut (Rama IV).
- Wichaichan succeeded his father by being appointed the Front Palace and Vice King of Siam in 1868, during the reign of his cousin King Chulalongkorn (Rama V).
- During his tenure the office of Front Palace was extremely powerful and rivalled that of the monarch's own.
- Inevitably the two forces clashed in the Front Palace crisis.
- Wichaichan was defeated and the power of the Front Palace was greatly diminished.
- After his death in 1885, the last vestiges of the title were abolished in favour of a Crown Prince.
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