Seiyō Ogawa (小川 晴暘, Ogawa Seiyō; 1894–1960) is a Japanese photographer, printer, and publisher who was a pioneer in photography of Buddhist sculptures and cultural properties in the Taishō and Shōwa eras. The name Seiyō is a pseudonym which was given to him from his master Maruki Riyō; his real name was Seiji (晴二).
Source: “Seiyō Ogawa”, English Wikipedia (CC BY-SA 4.0), excerpt