If you have information about this name, share it in the comments area below!
Books about Phothirak:
Phothirak kap satsana panha, phibun (Phonngan / Klum Sutfang Fan) by Phothirak
Wikhro Phra Thepwethi karani Phothirak by Wo. Chaiyaphak
Samphat phiset Samana Phothirak ruang kanmuang kap khunnatham: Phua prakop kantham witthayaniphon mua wan thi... by Phothirak