Muderic

Muderic was a Duke of Brittany in the 7th century. Sources regarding his life and reign are scarce and often conflicting, making a definitive historical account difficult. He is primarily known through genealogies and later Breton chronicles, where he appears as a predecessor to figures considered important in Breton history.

While specific dates of his reign are uncertain, he is generally placed sometime in the early to mid-7th century. He is often identified as a descendant of previous Breton rulers, though the exact lineage varies depending on the source consulted. His significance lies mainly in his role as a possible link in the chain of Breton rulers between the end of Roman influence and the emergence of more clearly documented figures.

Due to the limited and sometimes legendary nature of the available information, separating historical fact from later embellishment is a challenge for historians studying this period of Breton history. Details about his accomplishments, relationships, and the political circumstances of his rule are largely unknown.