Definition
The consistorium (also spelled consistory in its anglicized form) was the formal state council of the Roman emperors during the late imperial period. It served as the supreme advisory and administrative body of the empire, replacing the earlier consilium principis as the emperor's central governing institution. The consistorium comprised high imperial officials — including the quaestor sacri palatii, the magister officiorum, and various comites — who stood in the emperor's presence (the name derives from the practice of standing, rather than sitting, before the emperor) to deliberate on matters of law, policy, and administration.
In legal historical usage, the term also carries a secondary ecclesiastical meaning through its close relationship with the term consistory: the judicial or administrative assembly of a church court, particularly in canon law traditions. Burrill's cross-reference to "consistory" reflects this dual inheritance, where the Roman imperial model influenced the organizational structure of later ecclesiastical tribunals.
Common Confusion
CONSISTORIUM and CONSISTORY are closely related but not interchangeable in historical legal research. Consistorium refers specifically to the Roman imperial council — a civil governmental body. Consistory, by contrast, refers primarily to ecclesiastical courts and assemblies in canon law and post-Reformation church governance (Anglican, Presbyterian, and Roman Catholic usage). Because Burrill simply redirects readers from consistorium to consistory without distinguishing the civil and ecclesiastical contexts, researchers may conflate the two. A source discussing a consistorium is almost certainly engaging with Roman imperial or civil law history; a source discussing a consistory is almost certainly in an ecclesiastical or canon law context.
Why It Matters in Research
Consistorium appears infrequently in the Law Mind corpus, and almost exclusively in two contexts: Roman law treatises and historical treatments of the late Roman empire's administrative structure, and as a gateway term to ecclesiastical consistory law. Researchers encountering the term in primary or secondary sources should first establish which context applies before pursuing further research paths.
The primary research trap is Burrill's bare cross-reference to "consistory." A researcher following that link without recognizing the civil/ecclesiastical divide may find themselves reading canon law sources when their actual subject is Roman imperial administration, or vice versa.
For Roman law research, the consistorium is relevant to understanding how imperial rescripts, constitutions, and edicts were produced and authenticated — all matters of significance for interpreting Roman legal sources. The council's role in generating imperial legislation means that understanding the consistorium's composition and procedure informs the authority and character of late imperial legal texts.
For canon law and church governance research, the consistory tradition — which inherited organizational features from the Roman model — is a separate but related inquiry. Researchers should treat Burrill's cross-reference as a flag to consider both lines of research rather than a simple synonym.
The Mackeldey citation (Mackeldey, Roman Law, § 58) that both Black's editions rely upon is a real and recognized treatise source — Ferdinand Mackeldey's Lehrbuch des heutigen Römischen Rechts, translated into English as Handbook of the Roman Law. This is a legitimate nineteenth-century civil law treatise and the citation can be trusted as a genuine reference point for researchers seeking the primary authority behind these dictionary definitions.
Historical Dictionary Support
All three source dictionaries treat consistorium briefly. Black's (both editions) and Burrill's together provide the complete picture, which is itself quite limited. Black's first and second editions are nearly identical, both defining consistorium as the Roman emperors' state council and citing Mackeldey. Burrill adds no independent analysis, redirecting entirely to his consistory entry.
The historical dictionaries collectively miss the institutional evolution of the consistorium across the Roman imperial period — particularly its transformation from an informal advisory body under the early Principate into the formalized, standing bureaucratic council of the Dominate (post-Diocletianic empire). They also do not address the consistorium's role as a legislative and judicial organ, which is potentially its most significant feature for legal historians.
What the historical sources get right: the core identification of the body as the state council of the emperors is accurate and sufficient for basic orientation. What they omit: any discussion of membership, procedure, jurisdictional scope, or the body's influence on later ecclesiastical and governmental institutions.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Roman Law; Canon Law and Ecclesiastical Courts