Ōkura Bakufu
He was succeeded by his sons Yoriie and Sanetomo , and this place remained the seat of the government for 46 years until 1225 , when his wife Hōjō Masako died . 
<triplet> Yoriie <subj> Sanetomo <obj> sibling <subj> Hōjō Masako <obj> mother <triplet> Sanetomo <subj> Yoriie <obj> sibling <subj> Hōjō Masako <obj> mother <triplet> Hōjō Masako <subj> Yoriie <obj> child