Inspired by John Ford, an Irish-American director best known for his Westerns, Miyazaki created Irontown as a "tight-knit frontier town" and populated it with "characters from outcast groups and oppressed minorities who rarely, if ever, appear in Japanese films." He made the characters "yearning, ambitious and tough." Miyazaki did not want to create an accurate history of Medieval Japan, and wanted to "portray the very beginnings of the seemingly insoluble conflict between the natural world and modern industrial civilization." The landscapes appearing in the film were inspired by Yakushima. Despite being set during the Muromachi period, the actual time period of "Princess Mononoke" depicts a "symbolic neverwhen clash of three proto-Japanese races (the Jomon, Yamato and Emishi)."