Fujiwara no Hidehira

[1] During the Genpei War, he controlled his territory independently of the central government; however, he was the official imperial governor for Mutsu Province as of 1181.

Later, when Yoshitsune incurred his brother Minamoto no Yoritomo's wrath, he returned to Hiraizumi, and lived undisturbed for a time.

Hidehira had his son, Fujiwara no Yasuhira, promise to continue to shelter Yoshitune and his retainer Benkei, but Yasuhira gave in to Yoritomo and surrounded the castle with his troops, forcing Yoshitsune to commit seppuku and resulting in the famous standing death of Benkei.

This did nothing to appease him, and Yoritomo destroyed the Fujiwara domain and killed Yasuhira, son of Hidehira in 1189.

[2][3] According to legends, one of Hidehira's sons was cared for by wolves after his wife gave birth during a pilgrimage.