Although the family genealogy showed that he was the first son of Takefusa KIKUCHI, there is another theory that his parents were Takemori KIKUCHI and the daughter of Nyudo SATOMI (Monk Satomi).
菊池武房の長男と家系図にはあるが、菊池武盛と里見入道の娘との間に生まれたとの説もある。