sentences:  His maternal grandfather was Phraya Sri Sitthi Songkhram (Din Tharab), a royalist leader during the failed Boworadej Rebellion.Surayud's father was Lt.Colonel Phayom Chulanont, a Royal Thai Army military officer who, as "Comrade Too Khamtan" (), became a member of the Central Committee Communist Party of Thailand and Chief of Staff of the People's Liberation Army of Thailand.