A more thorough explanation:

The Law of Langobardi, also known as Lombard Law, is a Germanic customary law that is primarily based on a code called the Edict of Rothar. This code was published in A.D. 643 and was written in Latin. It was more complete than the Germanic leges barbarorum.

Rothar was the King of the Lombards at the time (A.D. 636–652). The Law of Langobardi was a set of rules that governed the Lombard people. It was used to settle disputes and maintain order in their society.

For example, if two Lombard people had a disagreement over property, they would turn to the Law of Langobardi to settle the dispute. The law would provide guidelines on how to resolve the issue fairly and justly.

The Law of Langobardi was an important part of Lombard culture and had a significant impact on the development of European law.