The University of Trier’s department of medieval history, in collaboration with the Archaeological Superintendency for Apulia carried out new excavations in the area of the bishop’s see of Tertiveri. During the 2011 and 2013 excavations, the cathedral tombs, a late medieval fortification wall and an iron-working furnace (16th century) abutting it were investigated. This season, the excavations further documented the late medieval fortification wall. A second trench was opened in another church situated in the eastern part of the settlement, whose position had been identified using geo-radar in 2009. The eastern apse of the church was found. Its wall was 1.35 m wide (fig. 1) and four masonry-built courses of the foundations were still in situ. To the east, there were two masonry-built tombs, positioned directly outside the apse on a north-south alignment. A double masonry-built tomb, trapezoidal in shape, was situated at 2m to the north and aligned west-east. It contained collective burials of which the upper ones were documented and recovered (fig. 2). To the north-east there was another burial cut directly in the terrain and aligned west-east. Finally, on the east side of the trench, a masonry-built ossuary was partially excavated. Below the remains of tiles and bricks, there was a fill c. 35 cm deep formed by human bones, presumably removed from earlier burials in the cemetery area next to the church.