Megan Tiddeman studied French and Italian at the University of St Andrews and completed her PhD in Historical Linguistics at Aberystwyth University, under the supervision of the late Professor David Trotter. Her thesis examined language contact in late medieval trade documents between Italian dialects and both Anglo-Norman and Middle English. She has worked as a PDRA with the Anglo-Norman Dictionary at Aberystwyth University, and as a Research Fellow on two projects led by Professor Louise Sylvester at the University of Westminster: Technical Language and Semantic Shift in Middle English and The Semantics of Word Borrowing in Late Medieval English. She has published on medieval Anglo-Italian contact, as well as on Middle English's lexical and semantic development.