Yabe Zenni
Yabe Zenni (1187–1256) was a daughter of Miura clan leader Yoshimura. Around 1200 she married Hōjō Yasutoki, future third regent of the Kamakura shogunate, and bore his heir Tokiuji before the couple divorced. She then married Sahara Moritsura and bore three sons; after his death she returned to her Yabe estate and took the religious name Zen'a, becoming known as Yabe Zenni.
Her grandson Hōjō Tokiyori became the fifth regent. In the Hōji Conflict of 1247 her sons sided with the Hōjō, and Moritoki later revived the Miura name. When she died in 1256, Tokiyori mourned fifty days.