Which sources provide evidence about early Germanic legal customs?

Evidence regarding early Germanic legal customs is derived from several key historical and archaeological sources:

• Classical Roman Accounts: The earliest insights into tribal life and customs come from contemporary Roman observers, most notably Julius Caesar’s Gallic War and Tacitus’ Germania. These texts provide foundational, albeit external, perspectives on early Germanic social and judicial structures.12
• Leges Barbarorum: Dating from the 5th to the 9th century, these written collections—such as the Salic Law, Lex Burgundiorum, and Edictum Rothari—serve as the primary records of Germanic custom. Rather than being legislation in the modern sense, these codes were compilations of existing tribal practices that were collected and declared as law to address specific disputes or areas of uncertainty.1
• Vernacular Traditions: Laws of the Anglo-Saxon and North Germanic groups were recorded in the vernacular, largely influenced by the spread of Christianity.1
• Archaeological Evidence: Excavations, including those of "bog people" and burial sites, provide physical evidence of social differentiation, status, and ritual practices that informed the broader cultural and legal context of these tribes.34