The Arioka Castle was named the Itami Castle since it was constructed by the Itami clan during the period of the Northern and Southern Courts (Japan) but Murashige ARAKI had the structure renovated, a sogamae constructed, and the name of the castle was changed into the Arioka Castle during the Tensho era (1573-1592).
有岡城は、南北朝時代(日本)に伊丹氏により築城され伊丹城と称したが、天正年間に荒木村重により改修され総構えとなり有岡城と改称した。