Trouble in the Holy City.- It is rumored that Bill Smith is making trouble for the Twelve, in Nauvoo, and will either compel them quietly to surrender their power and sub-mit to him, or else he will throw himself in open rebellion. In consequence of the sick-ness and death of his wife, Smith has been comparatively quiet since his arrival in the city ; but there have been many points in which he has disagreed with the heads of the church, which has led to coldness, if not hostlity. It is gossipped about, says the Warsaw Sig-nal, that Smith will, in a decent time, marry Emma, widow of his brother, the Prophet.- She is known to be hostile to the Twelve, and will lend her influence for their overthrow. If this union is effected, we shall look for a com-plete revolution in the Holy City during the course of the summer.