They had not waited for this to organize their tribunal, with Doctor Juan Ruiz de Medina as assessor and Juan Lopez del Barco, a chaplain of the queen, as promotor fiscal or prosecuting officer. To these were added, May 13, 1481, Diego de Merlo, assistente or corregidor of Seville, and the Licentiate Ferrand Yáñez de Lobon as receivers of confiscations--an indispensable office in view of the profits of persecution. All soon found plenty of work. The Conversos of Seville had not been unmindful of the coming tempest. Many of them had fled to the lands of the neighboring nobles, in the expectation that feudal jurisdictions would protect them, even against a spiritual court such as that of the Inquisition. To prevent this change of domicile a royal decree ordered that no one should leave any place where inquisitors were holding their tribunal, but in the general terror this arbitrary command received scant obedience. A more efficient step was a proclamation addressed, on January 2, 1481, to the Marquis of Cadiz and other nobles by the frailes Miguel and Juan. This proved that no error had been made in the selection of those who were to lay the foundations of the Inquisition and that a new era had opened for Spain. The two simple friars spoke with an assured audacity to grandees who had been wont to treat with their sovereigns on almost equal terms--an audacity which must have appeared incredible to those to whom it was addressed, but to which Spain in time became accustomed from the Holy Office. The great Rodrigo Ponce de Leon and all other nobles were commanded to search their territories, to seize all strangers and newcomers and to deliver them within fifteen days at the prison of the Inquisition; to sequestrate their property and confide it, properly inventoried, to trustworthy persons who should account for it to the king or to the inquisitors. In vigorous language they were told that any failure in obeying these orders would bring upon them excommunication removable only by the inquisitors or their superiors, with forfeiture of rank and possessions and the release of their vassals from allegiance and from all payments due--a release which the inquisitors assumed to grant in advance, adding that they would prosecute them as fautors, receivers and defenders of heretics.[457] This portentous utterance was effective: the number of prisoners was speedily so great that the convent of San Pablo, which the inquisitors at first occupied, became insufficient and they obtained permission to establish themselves in the great fortress of Triana, the stronghold of Seville, of which the immense size and the gloomy dungeons rendered it appropriate for the work in hand.[458]