Their power was at its greatest when they achieved the election of Pope Honorius II in 1124. From no later than 1130 the Frangipani held the Colosseum of Rome, which they had fortified and which gave them strategic control of the approaches to the Lateran Palace, the papal residence, from the north and west; the family lost control of the Colosseum to the Annibaldi in the mid-thirteenth century.
Their strength was at its highest when they elected Pope Honorius II in 1124. By no later than 1130, the Frangipani controlled the Colosseum of Rome, which they had fortified and secured their position from the north and west; however, control over the Colosseum was transferred to the Annibaldi by the mid-thirteenth century.