was a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese daimyo

Daimyo

is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

 of the Sengoku period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

, who was a powerful figure in the north half of Dewa Province

Dewa Province

is an old province of Japan, comprising modern-day Yamagata Prefecture and Akita Prefecture, except for the city of Kazuno and the town of Kosaka. It was sometimes called .-Historical record:...

. Chikasue was the son of Andō Kiyosue

Ando Kiyosue

was a Japanese daimyo of the Sengoku period, who was a traditional authority in the north half of Dewa Province and the south half of Yezo island. Kiyosue was the son of Andō Hirosue....

.

Chikasue united Ando family who had been divided. And he obtained some mines, and ruled the Akita port directly. However, he had died of sickness immediately before the Unification of the north half of Dewa province.