Leonato against Hero

Leonato rejects his daughter because he is overwhelmed by the claim that Hero is being unfaithful.  He is outnumbered by Claudio and his followers, therefore he sided with the majority.  Claudio was much in love with Hero and had granted proof along with the rest of his followers.  Leonato could not disagree with these claims because they were very prominent claims.  It is not normal that Leonato rejected his child because no matter what a child does, majority of the time the father is supposed to always support you in your choices even if they are wrong.  Leonato should not have disowned his daughter in the manor that he did.