This incident affords us a glimpse into the political aspects of the reform. In the tremendous struggle between the empire and papacy, Gregory allied himself with all the disaffected princes of Germany, and they were careful to justify their rebellions under the specious pretext of zeal for the apostolic church. They of course, therefore, entered heartily into his measures for the restoration of ecclesiastical discipline, and professed the sternest indignation towards those whom he placed under the ban. Thus, after Henry, in 1076, had caused his bishops to declare the degradation of Gregory, when the revolted princes held their assembly at Tribur, and in turn decreed the deposition of Henry, they used the utmost caution to exclude all who had communicated with Henry since his excommunication, together with those who had obtained preferment by simony, or who had joined in communion with married priests.[556] The connection, indeed, became so marked that the papalists throughout Germany were stigmatized by the name of Patarini—a term which had acquired so sinister a significance in the troubles of Milan.[557] In this state of affairs it was natural that common enmities and common dangers should unite the persecuted clergy and the hunted sovereign. Yet it is a curious illustration of the influence which the denunciations of sacerdotal marriage had exercised over the public mind, that although Henry tacitly protected the simoniacal and married ecclesiastics, and although they rallied around him and afforded him unquestionable and invaluable aid, still he never ventured openly to defend them. Writers both then and since have attributed the measure of success with which he sustained the fluctuating contest, and the consequent sufferings of the unbending pope, to the efforts of the recalcitrant clergy who resisted the yoke imposed on them by Rome.[558] Yet Henry had formally and absolutely pledged his assistance when Gregory commenced his efforts, and had repeated the promise in 1075;[559] and from this position he never definitely withdrew. Even when the schismatic bishops of his party, at the synod of Brixen, in 1080, pronounced sentence of deposition on Gregory, and filled the assumed vacancy with an anti-pope, the man whom they elected never ventured to dispute the principle of Gregory’s reforms, although the Lombard prelates, at that very time, were warmly defending their married and simoniacal clergy.[560] Indeed, Guiberto of Ravenna, or Clement III., took occasion to express his detestation of concubinage in language nearly as strong as that of his rival, although he threatened with excommunication the presumptuous laymen who should refuse to receive the sacraments of priests that had not been regularly tried and condemned at his own papal tribunal.[561] In thus endeavoring to place himself as a shield between the suffering priesthood and the persecuting populace, he was virtually striving