 After the start of the Edo period, what would become the core of present-day Aomori was a minor port settlement in the Hirosaki Domain called .The town was rebuilt in 1626 under orders of the "daimyō", Tsugaru Nobuhira and renamed "Aomori", but this name did not come into common use until after 1783; however, the historical accuracy of this claim is debated since there is no written material from the time to definitively connect Utō to Aomori.Some evidence even claims that Aomori and Utō co-existed in different parts the city in its current state.