HaLeiVi
Matisyahu (ben Yochanan of al hanissim) had a a son Yoachanan but he was not the yochanan kohen gadol who became a tzeduki. It is not clear who that yochanan was. According to Abaye in Brachos 29a it is Shimon (ben matisyahus) grandson. Either way it was definitely not Matisyahus father and almost definitely not his son.