According to Livy 1.12.6, in the vicinity of the Porta Mugonia Romulus prayed to Jupiter, vowing to build a temple on that site if the god stemmed the Sabine advance.

On November 8, 63 BC, it was in this temple, close to the Palatine Hill, that the senate convened to hear the consul Marcus Tullius Cicero deliver the first of his famous Catiline Orations against his enemy Lucius Catilina.

When a medieval tower was demolished in 1827, the ruins of an ancient building appeared, and the remains are frequently identified as the foundations of the temple.

The location near the Arch of Titus does not fit since it is in the wrong administrative region and not in the right position relative to the other buildings listed by ancient writers, but the Temple of Romulus on the Via Sacra is a perfect match.

Livy similarly connects the name Stator with the verb sistō in Romulus's prayer to Jupiter made at the moment when Romulus vowed to build a temple: "Take away the Romans' terror, and stay their disgraceful fleeing (dēme terrōrem Rōmānīs fugamque foedam siste); here I vow a temple to you, the Stayer Jupiter, to be a reminder to posterity that the city was saved with your present help.