H-O. · H.W. · Hywel Wyn Owen & Richard Morgan · W. Owen
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A Pocket Guide to the Place-Names of Wales | 978-0-7083-1458-6 (0-7083-1458-9) | 2000 |
| The Place-names of East Flintshire | 978-0-7083-1242-1 (0-7083-1242-X) | 1994 |
| The Place-Names of Wales | 978-1-78316-164-5 (1-78316-164-7) | 2015 |