2. Yet I number him in the song; He, too, has resigned his part In the casual comedy; He, too, has been changed in his turn, Transformed utterly

 There was another man whom the speaker perceived as an arrogant, good-for-nothing drunkard. This man was abusive towards people the speaker cared for very deeply. But the speaker admits that he must respect and acknowledge even this man. This man left also behind the unimportant activities of everyday life. This man also was completely, totally transformed by his participation in the Rising. He says that Major MacBride has "resigned his part" and died like many of the other revolutionary leaders. Nonetheless, Yeats says that MacBride has "been changed" through his sacrifice. He's no longer just a living jerk. Now he's a dead hero. This event was highly destructive but also helped bring about profound change.