A Germanic tribe recorded in contemporary Latin records as Longobardus or Langobardus (they may or may not have had distinguishing long beards ... or axes!) ruled most of the Italian peninsula from the late sixth to eighth centuries AD/CE.(Longobardia Major and Langobardia Minor)
In the vernacular, they became known as Lombards. (During later periods, Lombardy lingered on as a term for Northern Italy - it still survives today as one of the northern most provinces of Italy.)
Leges Langobardorum
Rothair's edict.--The laws of King Grimwald.--The laws of King Liutprand.--The laws of King Ratchis.--The laws of King Aistulf.
Charlemagne, already King of the Franks, was King of Italy from 774 (prior to this he had had a brief marriage to the daughter of the King of the Lombards) His descendants (Carolingians) were held power in Italy until c888, after which there was about 80 years of political instability. This dynasty principally used capitularies to "legislate."
The Lombard Laws by 
Die Kapitulariengesetzgebung Lothars I. in Italien by Middle Ages
Below you will see some general introductions (in English) to Medieval Italian legal history, while to the left is some help if you are interested in specifically Italian phenomena before c1000.
However, as Italy, its scholars, universities, libraries & practitioners, played very prominent roles in the development of western European legal culture, please consult the other pages in this guide for various aspects of pre 1500 Italian law & teaching.
300 - 1000 AD: Roman law survival
Legal scholarship
MA: Roman law
MA: Canon law
MA: Libri Feudorum
MA: Law merchant
The Politics of Law in Late Medieval and Renaissance Italy by 
Politics and Justice in Late Medieval Bologna by 
Dante and the Limits of the Law by 
Laws of Late Medieval Italy (1000-1500) by 
Medieval Public Justice by By tradition, the Law Bod has concentrated on collecting materials on the history ot the common law countiries, so what you can find on the Law Library shelves does not constitute all that might be useful for your research. When searching in SOLO, take careful note of the locations, and be prepared to move to another Bodleian reading room and/or request from the Closed Stacks
The Law Bod does have some issues of the journal Rivista di storia del diritto italiano at Italy 300 R290 but our run is not complete, and ends in 2008.
Some examples of works on later periods in the development of Italian law and legal system - unification as one state was established over 1848-1871.
Consuetudo : das Gewohnheitsrecht in der Rechtsquellen- und Methodenlehre des späten ius commune in Italien, (16.-18. Jahrhundert) by 
Criminal Law in Liberal and Fascist Italy by