In his attempt to rehabilitate the reputation of Dr. De Puebla, Spain's first resident ambassador to England, Garrett Mattingly dismissed as unimportant certain unflattering remarks about the envoy made by a royal councillor to two Spanish officials, who knew the councillor as Dr. Pedro Panec. Mattingly, unable to identify Panec, believed him to be insignificant in Tudor service and, therefore, his remarks to be uninformed. Nonetheless, the available sources reveal Pierre Le Pennec as the Spaniards' Dr. Panec, a cleric and lawyer from Morlaix, doctor of civil and canon laws, prothonotary of the Roman Church, king's clerk and councillor, and political agent in Henry VII's foreign service.
Historians of early Tudor diplomacy (when the term is not used interchangeably with foreign policy) have focused on the routine functions of ordinary diplomatic representatives, but Pennec has not merited the interest of Tudor diplomatic historians because he did not serve extensively as one of the king's ordinary diplomats. His only ordinary diplomatic function was in 1499 when he carried procuratorial letters to the Roman Curia for Henry VII.