After some disturbances Guido Novello and the Ghibellines were expelled, but it was not the popolo who triumphed; the pope and Charles were the real masters of the situation, and the Florentines found they had exchanged a foreign and Ghibelline protector for one who was foreign and Guelph.
For, however Ghibelline might be the original intention, the result was not commensurate with the subtlety of the design, and the power of the pope was rather increased than diminished by the event of the Crusade.
Thereupon, to spite the rival republic, the Sienese took the Ghibelline side, and the German emperors, beginning with Frederick Barbarossa, rewarded their fidelity by the grant of various privileges.
They seem to have always been Guelphs, and in the civil broils of Orvieto they sided with the Monaldeschi faction against the Ghibelline Filippeschi.
In part the war of Guelph and Ghibelline fought itself out in the East; and while one party demanded a regency, as in 1243, another argued for the recognition of Conrad, the son of Frederick II., as king.
From these contests of rival nobles, in which the names of Spinola and Doria stand forth with greatest prominence, Genoa was soon drawn into the great vortex of the Guelph and Ghibelline factions; but its recognition of foreign authority - successively German, Neapolitan and Milanese - gave way to a state of greater independence in 1339, when the government assumed a more permanent form with the appointment of the first doge, an office held at Genoa for life, in the person of Simone Boccanera.
The tyrants, as we have already seen, established themselves as captains of the people, vicars of the empire, vicars for the church, leaders of the Guelph and Ghibelline parties.
As a Ghibelline chief of valour and renown he was able to restore the military prestige of the Pisans, who under his command captured Lucca and defeated the Florentines at Montecatini on the 29th of August 1315.
The profits of his inroad were reaped by despots, who used the Ghibelline prestige for the consolidation of their own power.
Meanwhile the Guelph and Ghibelline factions were beginning to divide Italy into minute parcels.