Arenula'—'fine sand'—'Renula', 'Regola'—such is the derivation of the name of the Seventh Region, which was bounded on one side by the sandy bank of the Tiber from Ponte Sisto to the island of Saint Bartholomew, and which Gibbon designates as a 'quarter of the city inhabited only by mechanics and Jews'. The mechanics were chiefly tanners, who have always been unquiet and revolutionary folk, but at least one exception to the general statement must be made, since it was here that the Cenci had built themselves a fortified palace on the foundations of a part of the Theatre of Balbus, between the greater Theatre of Marcellus, then held by the Savelli, and[Pg 2] the often mentioned Theatre of Pompey.