'Dictionary of the Place Names of Wales' by Hywel Wyn Owen & Richard Morgan

This scholarly and accessible dictionary is the first of its kind in Wales.   It covers the names of human settlements in Wales, as well as prominent features of the landscape, also giving historical forms with dates.  Based on the authors' original research and that of other place-names scholars past and present, this authoritative dictionary also includes an invaluable glossary of the place-names elements.   First published in 2007.