As "persons who made distinguished contributions to the nation," the Kido family (due to the contribution of Takayoshi KIDO) and the Okubo family (due to the contribution of Toshimichi OKUBO) were ranked as Koshaku (侯爵).
また「国家に勲功ある者」として、木戸家（木戸孝允の功）、大久保家（大久保利通の功）が侯爵とされた。