 Henry also began legal proceedings against Florence, laying charges of Lèse majesté against the city and placing it under an Imperial ban in December 1311.After spending two months in Genoa, Henry continued on to Pisa by ship, where he was eagerly received by the inhabitants, who were the traditional enemies of Florence and were Ghibelline.Here he again began negotiating with Robert of Naples, before deciding to enter into an alliance with Frederick III of Sicily, strengthening his position and hopefully putting pressure on Robert of Naples.