T. F. Tout, The Empire and the Papacy, 918-1273
“ Ambrose a sort of North Italian patriarchate, and at the same time he wished to combine with ecclesiastical ascendency an organised temporal power. His twofold ambition 59was exactly that of the Papacy at a later period, and for the moment Milan seemed stronger than Rome. The citizens of Milan, more obedient to their bishops than the turbulent Romans, were zealous partisans of Aribert; but the smaller nobles, who saw in the fulfilment of his plans the destruction of their own independence, rose as one man against him. Civil war broke out in Lombardy between the friends and foes of Aribert. ”
