On September 14, 1186, according to Azumakagami (The chronology of the Kamakura bakufu [Japanese feudal government headed by a shogun]), MINAMOTO no Yoritomo appointed TAIRA no Yasuyori as hoshi of Oe no ho, a shogunal demesne in the Province of Awa.
文治二年（１１８６年）閏七月二十二日（東鏡）源頼朝は平康頼を阿波国の天領麻植（おえ）保の保司に任命した。