Allt Cwrt-dyrysni (Topographic feature).
Grid Reference: SN 53521 23518. Parish: Llanegwad, Carmarthenshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Allt Ddyrys (Field).
Grid Reference: SH 68142 38364. Parish: Maentwrog, Merionethshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Allt ddyrys ar dole wrthi (Topographic feature).
Grid Reference: SN 10430 41019. Parish: Bayvil, Pembrokeshire
When recorded: 1500. Primary Source: Bronwydd Collection. Secondary Source: Place-Names of Pembrokeshire

Berth ddyrys (Field).
Grid Reference: SH 62005 26182. Parish: Llanenddwyn, Merionethshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Bryn Dyrys (Unclassified).
Grid Reference: SJ 21889 74433. Parish: Flint, Flintshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Buarth y gelli ddyrys (Field).
Grid Reference: SH 72127 32339. Parish: Trawsfynydd, Merionethshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cae dyrys (Field).
Grid Reference: SJ 22805 38076. Parish: Glyntraian, Denbighshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cae dyrys (Field).
Grid Reference: SJ 22805 38076. Parish: Glyntraian, Denbighshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cae dyrys fach (Field).
Grid Reference: SJ 22763 38022. Parish: Glyntraian, Denbighshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cae dyrys fach (Field).
Grid Reference: SJ 22763 38022. Parish: Glyntraian, Denbighshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin