The Lex Baiuvariorum was a collection of the tribal laws of the Bavarii of the sixth through eighth centuries.
Immediately after the revolt of Bavaria in 743, the Bavarian Duke Odilo was forced to submit to Pippin the Younger and Carloman, the sons of Charles Martel, and to recognize the Frankish suzerainty.
About the same period, too, the church of Bavaria was organized by St Boniface, and the country divided into several bishoprics; and we find frequent references to these bishops (in the plural) in the law of the Bavarians.
Many of the extant manuscripts are in a small format, a clear indication that the lawbook was at hand when the lord held court.
"The research work of Konrad Beyerle indicates that the Benedictine monastery at Niederaltaich on the Danube played an important part in the drafting of this lex...which was established in 741.