Cae oddiar gwinllan (Field).
Grid Reference: SN 62145 59531. Parish: Llangeitho, Cardiganshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Gwinllan (Unclassified).
Grid Reference: SH 29793 30417. Parish: Llanengan, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwinllan (Unclassified).
Grid Reference: SH 45185 54526. Parish: Llandwrog, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwinllan (Field).
Grid Reference: SJ 17569 72242. Parish: Ysceifiog, Flintshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Gwinllan (Field).
Grid Reference: SH 33341 79618. Parish: Bodedern, Anglesey
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Gwinllan (Field).
Grid Reference: SH 33224 79543. Parish: Bodedern, Anglesey
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Gwinllan Bron -heulog (Unclassified).
Grid Reference: SH 28428 32330. Parish: Botwnnog, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwinllan Bryn-capel (Unclassified).
Grid Reference: SH 28760 31621. Parish: Llanengan, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwinllan Bwlch-y-llan (Unclassified).
Grid Reference: SH 32178 37358. Parish: Buan, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwinllan Cae`r-llyn (Unclassified).
Grid Reference: SH 29297 31770. Parish: Llanengan, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website