Thin sectioning of twenty-five representative sherds of later Mediaeval pottery from dated contexts allowed them to be divided into a number of broad fabric groups based on the range of non-plastic inclusions present. These consisted of: (1) volcanic, possibly from the Exeter district, (2) gabbroic, from the Lizard, (3) chert-tempered, (4) slate-tempered, probably local, (5) North Devon gravel-tempered ware, (6) quartz, (7) ?St. Germains ware from the Tamar Valley, and (8) tourmaline-granite, possibly from the Fowey Valley.