Auditor of the Rota in 1511, and sent to Maximilian and to Vienna as nuncio.
His further promotion was rapid; at the instance of Pope Pius, who thought his talents would be best employed at the bar, he became votante di segnatura, and, on the first vacancy, auditor of the Rota for Rome.
It judges cases in which auditors of the Rota are concerned, such as personal objections, but especially objections (querelae) lodged against sentences of the Rota, with a view to their being annulled or revised (restitutio in integrum).
He became a notary of the papal court of the rota at Avignon, and in 1376 went with the Curia to Rome.
He consequently withdrew all judicial affairs from the Congregations, and handed them over to the two tribunals, now revived, of the Rota and the papal Signatura; all affairs concerning the discipline of the sacraments were entrusted to a new Congregation of that name; the competency of the remaining Congregations was modified, according to the nature of the affairs with which they deal, and certain of them were amalgamated with others; general rules were laid down for the expedition of business and regarding personnel; in short, the work of Sixtus V.
In this constitution he declared that the competency of these various organs was not always clear, and that their functions were badly arranged; that certain of them had only a small amount of business to deal with, while others were overworked; that strictly judicial affairs, with which the Congregations had not to deal originally, had developed to an excessive extent, while the tribunals, the Rota and the Signatura, had nothing to do.
Many miracles have been ascribed to him; an official list of these, said to have been attested by eyewitnesses, was drawn up by the auditors of the Rota when the processes for his canonization were formed, and is preserved in manuscript in the Vatican library.