The son of Phraya Wiset Singhanat of Phetburi, and son-in-law of Phraya Sri Sitthi Songkhram, Phayom became an ally of Marshal Plaek Pibulsonggram in his coup against the government of Thawal Thamrong Navaswadhi and Pridi Bhanomyong in 1947.

[1] Phayom returned to Thailand in 1957 to run in the general elections in March, becoming MP of Phetburi.

Later that year, Sarit Dhanarajata seized power from the government of Plaek Pibulsonggram.

Phayom subsequently left his family and went underground, adopting the nom de guerre Comrade Too Khamtan (สหายตู้คำตัน).

His son, Surayud, later joined the Royal Thai Army and led operations against his father.