Mari C. Jones is Reader in French Linguistics and Language Change at the University of Cambridge and Fellow in Modern and Medieval Languages at Peterhouse, Cambridge. A highly experienced fieldworker, she has published extensively on language obsolescence and revitalisation in relation to Insular and Continental Norman, Welsh and Breton. Her publications include Language Obsolescence and Revitalization (1998), Jersey Norman French (2001) and The Guernsey Norman French Translations of Thomas Martin (2008).