The Bodleian Libraries, University of Oxford, publish their medieval(ish) manuscripts catalogue in TEI (https://github.com/bodleian/medieval-mss). This repository provides a subset of the catalogue information mapped into RDF.
To generate linked data from TEI, it is first transformed into a simpler, flatter XML structure using xquery and then mapped to RDF/XML using 3M software (https://github.com/isl/Mapping-Memory-Manager). This mapping relies heavily on CIDOC-CRM, and grew out of the Oxford Linked Open Data (OXLOD) and Mapping Manuscript Migrations (MMM) projects at Oxford and was lead by Andrew Morrison and Athanasios Velios.