According to Mendoza, Catherine's "whole right" depended upon the brief, a statement indicating a general suspicion that the bull was really insufficient.[618] So the winter of 1528-29 and the following spring were spent in efforts to get hold of the original brief, or to induce Clement to declare it a forgery.

The Queen was made to write to Charles that it was absolutely essential to her case that the brief should be produced before the legatine Court in England.[619] The Emperor was not likely to be caught by so transparent an artifice.

Moreover, the emissary, sent with Catherine's letter, wrote, as soon as he got to France, warning Charles that his aunt's letter was written under compulsion and expressed the reverse of her real desires.[620] In the spring of 1529 several English envoys, ending with Gardiner, were sent to Rome to obtain a papal declaration of the falsity of the brief.

Clement, however, naturally refused to declare the brief a forgery, without hearing the arguments on the other side,[621] and more important developments soon supervened.

Gardiner wrote from Rome, early in May, that there was imminent danger of the Pope revoking the case, and (p.