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. He later disagreed with the leaders of the junta and started a failed coup of his own, the so-called Army Staff School coup.
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 1947 coup against the government of Thawal Thamrong Navaswadhi and Pridi Bhanomyong. He later disagreed with the junta leaders and attempted a failed coup, known as the Army Staff School coup.