Blaenllwynau (Settlement).
Grid Reference: SO 10274 02260. Parish: Bedlinog, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Cae llwynau (Field).
Grid Reference: SO 33791 04471. Parish: Goetre Fawr, Monmouthshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cefn-llwynau (Unclassified).
Grid Reference: ST 13453 95783. Parish: Gelligaer, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Cefn-llwynau Hall (Unclassified).
Grid Reference: ST 13746 95848. Parish: Gelligaer, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Gwrach-y-llwynau (Unclassified).
Grid Reference: SN 70708 02340. Parish: Rhyndwyglydach, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Llwynau (Unclassified).
Grid Reference: ST 02579 80548. Parish: Llantrisant, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Llwynau (Unclassified).
Grid Reference: ST 04507 85656. Parish: Llantrisant, Glamorgan
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Llwynau (Unclassified).
Grid Reference: SH 82019 54923. Parish: Llanrwst Rural, Denbighshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Llwynau (Field).
Grid Reference: SO 00488 48923. Parish: Llanynys, Brecknockshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Llwynau brook (Unclassified).
Grid Reference: ST 39239 95084. Parish: Llantrisant Fawr (South), Monmouthshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website