Hirosaki Domain

Hirosaki Domain (弘前藩, Hirosaki-han^?), also known as Tsugaru Domain (津軽藩, Tsugaru-han^?), was a Japanese domain of the Edo period. It was located in northern Mutsu Province (modern-day Aomori Prefecture), Japan. It was centered on Hirosaki Castle in what is now the city of Hirosaki, Aomori. It was ruled by the Tsugaru clan. A branch of the family ruled the adjoining Kuroishi Domain.

The Tsugaru clan, originally the Ōura clan (大浦氏, Ōura-shi^?), was originally a subordinate branch of the Nambu clan, holding portions of northern Mutsu Province. Ōura Tamenobu revolted against his overlord, and receiving the support of Toyotomi Hideyoshi, was confirmed as an independent warlord in 1590 and changed his name to “Tsugaru”. Tamenobu assisted Hideyoshi at the Battle of Odawara, and accompanied his retinue to Hizen during the Korean Expedition. Afterwards, he sided with Tokugawa Ieyasu during the Battle of Sekigahara in 1600.

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