He embraced the developing tale that Saint Martial, the third century bishop who Christianized the Limoges district, had actually lived centuries earlier, and was in fact one of the original apostles. And he supplemented the less than scanty documentation for the alleged 'apostolicity' of Martial, first with a forged "Life" of Martial, as if composed by Martial's successor, Bishop Aurelian. To effect this claim, he composed an "Apostolic Mass" that still exists in Adémar's own hand (F-Pn lat. 1121, ff. 28v-32v). The local bishop and abbot seem to have cooperated in the project and the mass was first sung on Sunday, August 3, 1029.