Along the south-western side of the portico is a base of a statue (of the many that were also to adorn this area) with a very interesting epigraph. In it, in fact, appears the name of a famous pantomime from the 3rd century AD, Marcus Septimius Aurelius Agrippa, freedman of Caracalla, to whom an admirer, Publius Albucius Apollonius, who claims to be Milanese (mediolanesis ex Italia), had erected a portrait-statue.