sentences:  Much resentment had built up within the Order and in the General Convent against Grand Master Jean de la Cassiere over a series of perceived humiliations suffered by the Order during his rule.In 1581, this led to a virtual mutiny, when the General Convent deposed La Cassiere and placed him in confinement in Fort St. Angelo, making Romegas the de facto Grand Master.The Pope sent a special envoy, Gaspare Visconti, to investigate and, simultaneously, to administer the Order until the dispute could be settled.