Definition
The Lex Longobardorum (also rendered Lex Langobardorum) is the body of law of the Lombards, a Germanic people who established a kingdom in northern and central Italy following their invasion in 568 A.D. The code originated with King Rotharis, who issued his Edictum Rothari in approximately 643 A.D., systematizing and committing to writing the customary laws of the Lombard people. Subsequent Lombard kings — including Liutprand, Ratchis, and Aistulf — extended and revised the code over the following century. The resulting corpus governed personal status, property, crime, procedure, and family relations among the Lombard population in Italy.
The Lex Longobardorum is significant not merely as a relic of early medieval legislation but as a living legal tradition. It survived the Lombard kingdom's defeat by Charlemagne in 774 A.D. and continued to operate alongside Frankish law and later Roman law revivals, under the principle of personality of laws — the rule that each person was governed by the law of their own people rather than the law of the territory in which they lived. Historical sources report the code as still partially operative in certain districts of Italy well into the early modern period.
The code also served as a foundational source for the Books of Feuds (Libri Feudorum), the canonical medieval compilation of feudal tenure law, giving Lombard legal concepts a reach far beyond Italy and far beyond the Lombard people themselves.
Why It Matters in Research
Researchers encountering Lex Longobardorum in historical sources should distinguish among three overlapping bodies of material: (1) the original Edictum Rothari and its Lombard-era royal additions; (2) the broader "Lombard law" tradition as interpreted and taught in the law schools of Pavia from the tenth century onward; and (3) Lombard legal provisions as they were absorbed into the Libri Feudorum and thereby transmitted into European feudal law scholarship. References in medieval and early modern legal texts may invoke any of these layers without distinguishing among them.
The corpus connection to the Libri Feudorum is especially important. The Libri Feudorum — which became part of the standard Corpus Juris Civilis as taught in European universities — drew heavily on Lombard custom. A researcher tracing the origins of feudal tenure doctrines (wardship, reliefs, forfeiture, investiture) will frequently be directed back to Lombard sources even when the immediate reference is to Roman or canon law compilations.
The personality of laws principle operative during the Carolingian period means that post-774 documents from northern Italy may invoke Lombard law for some parties and Frankish, Roman, or Salic law for others, depending on the ethnic identity of the individuals involved. Researchers working with Carolingian-era charters and legal instruments must be alert to this fragmentation.
The survival claim — that Lombard law remained in force in parts of Italy into the early modern era — appears in Bouvier, Burrill, and elsewhere but should be treated cautiously. It reflects the persistence of local custom rather than formal statutory authority, and its practical scope by the eighteenth century was narrow.
Historical Dictionary Support
The historical dictionaries agree on the core identification: the Lex Longobardorum is an ancient Lombard code, originating before or during the eighth century, that survived the fall of the Lombard kingdom. Black's, Rapalje & Lawrence, and Burrill all note its continuation after Charlemagne's conquest, and Rapalje and Burrill both preserve the claim of partial survival in parts of Italy — citing Bouvier and Butler's Hora Juridica respectively.
Burrill adds the most substantive historical detail, attributing the code's origins specifically to Rotharis (c. 620 in Burrill's reckoning, though the standard date for the Edictum is 643) and noting, via Spelman, the supposed Saxon origin of the Lombards as an explanation for observed parallels between Lombard law and early English law. This Anglo-Saxon parallel theory was a fixture of early modern legal scholarship and appears in Spelman's Glossarium Archaeologicum; researchers should treat it as a historiographical artifact of that era rather than settled modern scholarship.
Burrill's reference to the Books of Feuds (Lib. 2, tit. 1) anchors the practical importance of the Lex Longobardorum within the civilian tradition — it was not merely an antiquarian curiosity but an authoritative source cited in the most widely taught feudal law compilation in European legal education.
What the historical dictionaries collectively understate is the role of the Pavian glossators — the jurisconsults of tenth- through twelfth-century Pavia who systematized and interpreted Lombard law in ways that substantially shaped the form in which it entered later scholarship. The "Lex Longobardorum" cited by medieval and early modern jurists was often the glossed and interpreted version, not the raw Edictum.
Jurisdictional Note
The Lex Longobardorum is a historical legal system rather than a jurisdiction in the modern sense. Its primary relevance to modern legal research lies in Italian legal history, the comparative history of feudal tenure, and the intellectual history of the civilian tradition. Researchers in Anglo-American law will most commonly encounter it in treatises on feudal tenure and in scholarly commentary on the Libri Feudorum.