Definition
Homagium planum (Law Latin: "plain homage") is a feudal term designating the lightest form of homage — a ceremonial oath of fidelity owed by a vassal to a superior lord that carried no accompanying obligation of military service and no duty to attend the lord's court. It bound the person performing it to loyalty alone, leaving all other feudal burdens unimposed. In practical terms, homagium planum represented the minimum acknowledgment of feudal subordination: the lord received a formal recognition of supremacy, and the vassal received whatever protections or tenure flowed from that acknowledgment, but neither party incurred the full mutual obligations characteristic of more demanding forms of homage.
Why It Matters in Research
This is a specialized feudal law term with no modern legal application. Researchers encounter it almost exclusively in primary sources and treatises dealing with medieval land tenure, feudal obligation, and the constitutional history of European monarchies — particularly in Scottish, English, and continental European contexts.
The principal research trap is conflating homagium planum with homage generally. Feudal sources use "homage" to describe a spectrum of obligations ranging from the most demanding military tenures to this minimal form. When reading a medieval charter, chronicle, or early treatise that records a lord receiving "homage," the type of homage being performed matters enormously for understanding what the parties actually agreed to. Homagium planum signals a deliberately limited relationship — it appears frequently in contexts where a powerful vassal wished to acknowledge nominal superiority without surrendering independence, or where clergy performed homage for temporalities without incurring military duties incompatible with clerical status.
Both Black's and Burrill's source the definition to Robertson's Charles V, Appendix Note viii — a work of Scottish and European constitutional history. Researchers working in English feudal law sources should be aware that the distinction between grades of homage was more elaborately theorized in Scottish and continental civilian commentary than in common law treatises, where homage was typically treated as a more uniform category. The term will surface in Scots law sources, in works influenced by civil law, and in historical scholarship on the feudal incidents rather than in standard English common law pleading records.
Historical Dictionary Support
Black's Law Dictionary and Burrill's Law Dictionary reproduce the definition in nearly identical language, both tracing to Robertson's Charles V Appendix. The agreement between the two sources is complete — there is no divergence in meaning or emphasis. Neither source expands beyond the essentials: plain homage, fidelity only, no military service, no court attendance required.
What the historical dictionaries do not address is how homagium planum fit within the broader taxonomy of feudal homage. Historical legal scholarship identifies multiple gradations — liege homage, simple homage, and plain homage being the most commonly distinguished — with liege homage carrying the strongest obligations (including priority of duty above other lords) and homagium planum sitting at the opposite end of the spectrum. The dictionaries record the definition accurately but without this comparative context, which a researcher needs to interpret the term correctly when it appears against other forms in the same source.
Robertson's work, cited by both dictionaries, situates the term in its continental European context. Researchers relying solely on Black's or Burrill's without consulting Robertson or primary feudal law treatises such as Craig's Jus Feudale (for the Scottish context) or Littleton's Tenures (for English tenure) will have the definition but lack the structural framework to apply it with precision.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Feudal Tenure; Homage and Fealty; Military Service (Feudal)