Ceiridwen received her B.Sc. (Hons.) in Genetics from the University of York in 1996, and an M.Sc. in Biomolecular Archaeology from the University of Sheffield in 1998. Her Ph.D., completed in 2002 at Trinity College Dublin, Ireland, involved the study of genetic variation in domesticated cattle and wild aurochsen using ancient and modern DNA analyses. Between 1999 and 2008, she was solely responsible for the Bioarchaeology Laboratory at Trinity College Dublin.

She was a Researcher in Ancient DNA Studies at the Research Laboratory for Archaeology, University of Oxford, for six years (2009–2015), during which time she successfully applied for funding to set up an ancient DNA lab. She was appointed by the University of Huddersfield as a Senior Research Fellow in Archaeogenetics in June 2015.

• Ancient DNA
• Archaeology
• Migration patterns
• Population genetics and conservation
• Animal domestication
• The nature of the Mesolithic/Neolithic subsistence change
• Phylogeography of European mammals
• Pre- and post-glacial mammals in the British Isles and (re)colonisation signatures
• The Romano-British to Anglo-Saxon transition