The Life of Mogami Yoshiaki

1546 [age one]
Born the first son of Mogami Yoshimori, Lord of Yamagata Castle.
He was called Hakujūmaru as a child.

1558 [age 13] 　　
Celebrated the rite to mark his attainment of manhood, and receiving the right to use the character "Yoshi" [ 義 ] from the Shogun Ashikaga Yoshiteru he took the name "Yoshiaki" [ 義光 ] .

1570[age 25]
Succeeded to the head of the Mogami clan.
Counting from Shiba Kaneyori, he became the 11th Lord of Yamagata Castle.

1600 [age 55]
Battle of Keichō Dewa / Naoe Kanetsugu's Uesugi forces attack Yamagata.
Fierce fighting at Hasedo, Kaminoyama and other places in Yamagata Prefecture.

1602 [age 57]
Became a great daimyo with land holdings which produced 570 thousand koku [135 million liters] of rice. His was the fifth largest domain, outside of Tokugawa Toyotomi's clan. At this time Yamagata was completely laid out as a fully equipped castle town.

1611 [age 66]
Took a high ranking position in the Guards, Jyushii Konoe-no-shōshō.
Brought the Shōnai Plain under cultivation by building irrigation systems at Kitadateseki and Inabazeki.

1614 [age 69]
Died of illness in Yamagata Castle on January 18. Was buried at Kōzenji in Yamagata City.