During these years of the rule of the Twelve, the contado was perpetually threatened by wandering bands of mercenaries--the Compagnia Bianca, mainly Englishmen, but led by German captains; the Compagnia della Stella; the Compagnia del Cappello of Italians, under Niccolò da Montefeltro; the Compagnia di San Giorgio, which is associated with the great name of John Hawkwood. These had to be compounded with, to be guarded against by enrolling other mercenaries, to be played off against each other. In October 1363, the Sienese, led by their Conservatore or War-Captain, Ceccolo di Giordano Orsini, and stiffened by a strong force of Germans and Hungarians, overtook the Compagnia del Cappello, which was devastating the contado, in the Valdichiana, and gained a complete victory, taking its captain and other leaders prisoners. But when, in March 1367, they tried to play the same game with John Hawkwood and his company of Englishmen, near Montalcinello, there was a very different tale to tell; the Sienese were driven back to Siena in headlong rout, their Conservatore was taken prisoner, and peace had to be purchased at a goodly rate of golden florins. Within the city there was restless plotting against the Twelve, followed by banishments and executions--for this government was by no means so reluctant to lay hands upon the nobles as the Nine had been. Realising that the feeling of the city was turning against them, the Twelve sent a splendid embassy to receive Pope Urban V. when he landed at the Port of Talamone (on his way to Rome in that ineffectual, because premature, attempt to heal the leprosy of Avignon), entered into league with him, sent horsemen under Sozzo Bandinelli and Piero Piccolomini to support the cause of the Church at Viterbo and Bologna. This was good so far as it went, but it did not avert the storm that burst upon Siena in 1368.