This chapter presents the translation of the third book of the Deeds of the Bishops of Cambrai, with extensive commentary and explanatory notes. This text talks about the Deeds of Bishop Gerard. Gerard was born to parents who were of not insignificant status in Lotharingia and in the lands of the Carlings. Lord Gerard the bishop was planning a dedication of a church in honor of Mary, the holy mother of God, and removed the altar from its proper place. The ground around the altar was excavated, and the remains of many saints were found there. These included the arm of Vaast, the confessor of Christ, as well as a large part of his head and parts of his other limbs. The church was consecrated there solemnly on January 4th. The body of St. Vaast and of the other saints were carried away by the monks of this place.