seems that in that very place there was a tribunal praetoris sub divo with gradus known as the tribunal Aurelium, a structure built by C. Aurelius Cotta...

Palatine Hill Tribunal Aurelium (Tribunal of Aurelius), near the Temple of Castor and Pollux Tribunal of the City Praetor (Praetor Urbanus) Tribunal of the Praetor...

(A-Class: preface, Ordo de celebrando concilio, Pseudo-Damasus I's Epistula ad Aurelium [Scripta sanctitatis tuae], and Pseudo-Isidorian introduction to the council...