Cotefredus (also spelled Cotefred, Kotephred, or Gotfrid; died after 730) was an Alemannic nobleman who served as Duke of the Alamanni in the early 8th century. He is a documented historical figure appearing in contemporary Frankish sources, including the Chronicon of Fredegar (Continuations) and the Annales Laurissenses maiores (Lorsch Annals).
Historical Context and Rule Cotefredus was a member of the Ahalolfing dynasty, the son of Duke Theudebald (Theodebaldus). He assumed the ducal title around 709 or 710, likely ruling jointly with his brother Lanfrid (Lantfrid) over the Alemannic territories situated between the Rhine, the Danube, and Lake Constance (the Ducatus Alamanniae).
Relations with the Frankish Mayors of the Palace During his tenure, the Frankish mayor of the palace, Pepin of Herstal, exerted nominal suzerainty over the Alemanni. Following Pepin's death in 714, the ensuing Frankish civil war allowed Cotefredus and Lanfrid to assert a high degree of autonomy. They minted their own coinage (tremisses) bearing the inscription COETEFRIDVS DVX or similar variants, a significant indicator of independent ducal authority.
After Charles Martel consolidated power in Francia, he launched campaigns to reassert Frankish hegemony over the southern duchies. In 730, Charles Martel invaded Alemannia. The Continuator of Fredegar records that Charles "subdued the Alemanni and killed their duke, Theudebald" (referring to a later Theudebald, son of Lanfrid), but earlier entries note the submission of Cotefredus and Lanfrid. Cotefredus appears to have submitted to Charles Martel, possibly retaining his position as a Frankish vassal for a short period, though the specific date and circumstances of his death are not recorded in surviving sources.
Legal Significance Cotefredus is associated with the Lex Alamannorum (Law of the Alamanni). The Lex Alamannorum exists in two primary recensions: the Pactus Alamannorum (older) and the Lex Alamannorum (younger, often called the Lex Lanfridi or Lex Cotefredi). The younger recension's prologue explicitly names the dukes Lanfrid and Cotefredus as the legislators who revised and promulgated the law code with the consent of the Alemannic nobility (optimates). This legal activity underscores their attempt to formalize ducal governance and integrate Alemannic custom with Frankish administrative practices.
Numismatic Evidence Gold tremisses minted during the joint rule of Cotefredus and Lanfrid (c. 710–730) have been found in the Lake Constance and Upper Rhine regions. The coins typically bear the name of the moneyer and the duke's title (DVX), providing primary archaeological evidence for their political independence from the Merovingian royal mint at this time.
Death and Succession The exact date of Cotefredus's death is unrecorded. He disappears from the historical record after the Frankish campaign of 730. He was succeeded by his nephew, Theudebald (son of Lanfrid), who was killed by Charles Martel in 730/731, effectively ending the autonomous Ahalolfing ducal line and bringing Alemannia under direct Frankish administration via appointed counts.
