Cae Gwyndwn (Field).
Grid Reference: SN 63120 03809. Parish: Mawr, Glamorgan
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Cae gwyndwn (Field).
Grid Reference: SN 66061 13718. Parish: Llandybie, Carmarthenshire
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Cae Gwyndwn hope Isha (Field).
Grid Reference: SN 67470 06415. Parish: Mawr, Glamorgan
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Cae Gwyndwn hope Ucha (Field).
Grid Reference: SN 67336 06469. Parish: Mawr, Glamorgan
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Caegwyndwnglo (Field).
Grid Reference: SN 55248 01840. Parish: Llangennech, Carmarthenshire
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Gwyndwn Issaf (Field).
Grid Reference: SN 74320 08735. Parish: Llangiwg, Glamorgan
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Gwyndwn mawr (Field).
Grid Reference: SN 68328 07373. Parish: Mawr, Glamorgan
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Park y gwyndwn glas (Field).
Grid Reference: SN 10430 41019. Parish: Bayvil, Pembrokeshire
When recorded: 1586. Primary Source: Bronwydd Collection. Secondary Source: Place-Names of Pembrokeshire

Traeth Gwyndwn-mawr (Unclassified).
Grid Reference: SN 02314 39716. Parish: ,
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ynys Gwyndwn-mawr (Unclassified).
Grid Reference: SN 02296 39780. Parish: ,
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website