The Pien Collegio was the Signoria with three groups of Sages, primarily in charge of foreign relations.
“Pien Collegio” from the L’Archivio di Stato di Venezia: indice generale, storico, descrittivo ed analitico (1937) by Andrea da Mosto
“Pien Collegio” from the Lessico Veneto (1851) by Fabio Mutinelli, translated by René Seindal.