Stub entry. Roman senator-or-Alban-noble (sources vary) who served as the canonical witness to Romulus' apotheosis on the Via Appia. His testimony — that the deified Romulus instructed him to have the Romans worship Romulus as Quirinus — is the foundational template for Roman political-apotheosis and the structural anchor for the Augustan-and-imperial-period princeps-deification tradition. Cicero (Rep. 2.20) treats the testimony with rhetorical skepticism while preserving its narrative function. Some early-imperial-period gens-Iulia genealogical claims attached Proculus to that family's lineage as part of the Augustan reception of the Romulus-Quirinus parallel.