It is supposed that he could not get along well with his nephew-in-law Toshimasu (Keijiro) MAEDA, and there remains an anecdote that when Keijiro ran away, Toshiie was made to take a cold-water bath.
義理の甥である前田利益（慶次郎）とはソリが合わなかったとされ、慶次郎出奔の際に水風呂に入れられたとの逸話が残る。