One of the characteristics of Francia under Carolingian rule was an increase both in church conciliar activity and in the written records for this activity. This chapter examines the manuscript transmission of the records of one particular council, that which met in Aachen in 862 to discuss King Lothar II’s marriage. It assesses its the implications of this transmission both for the redaction and transmission of conciliar acts, an important function of the written word in Francia, and for the politics of King Lothar II’s kingdom.