Satake Yoshishige was a SAMURAI and he isn't so famous.
He became a daimyou by succeeding Satake Yoshiaki who was Yoshishige's father.
Yoshishige entered into an alliance with Uesugi Kenshin, and expanded his territory.
However, on the other hand, daimyous of his neighborhood were on their guard against Yoshishige.
Particularly, the opposition with Houjou clan and Date Masamune were very intense.
Yoshishige defended his territory from attacks of other daimyou by his diplomatic skill.
He was known as a brave and clever SAMURAI.
He had a legend that he was involved in politics at only 10 years old and he killed 7 enemies with a sword in an instant in a battle.
With his intrepid spirit, he was called "Oni Yoshishige"(ogre Yoshishige).
Yoshishige appointed his son Yoshinobu for a successor, and then Yoshishige retired.
However Yoshinobu showed stupid behavior that he took both sides of Tokugawa Ieyasu and Ishida Mitsunari in the battle of Sekigahara.(It was the battle to be determined the Japan's ruler.)
As a result, he had to move to the land of Dewa(current Akita prefecture).
His Descendant is involved in politics of Akita as a governor even now(As of January 2012).