The results of a ground-penetrating radar (GPR) survey over a Viking-Age Christian churchyard (ca. AD 1000-1100) that was subsequently fully excavated are reported. During excavation, broadband time-domain reflectometry (TDR) measurements of apparent relative permittivity were made of various features which helped to constrain interpretations of the radar data. Although four probes of different lengths were used (0.1, 0.15, 0.2 and 0.3 m), the longest waveguide yielded effective frequencies that most closely matched the bandwidth of the radar data, which was collected using a 500 MHz antenna. The excavation revealed 25 graves. Comparison of the radar data to the archaeological record indicated that all graves containing skeletal remains produced signatures from the bones, but only half of those were interpreted as such prior to excavation. The skeletons of three adults