Cwm-pen-llydan (Unclassified).
Grid Reference: SH 92989 06370. Parish: Llanbrynmair, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Cwmpenllydan House and Land (Field).
Grid Reference: SN 84301 44642. Parish: Llanwrtyd Without, Brecknockshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Cyfer llydan (Field).
Grid Reference: SO 00699 49584. Parish: Llanynys, Brecknockshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Dol du Llydan (Field).
Grid Reference: SJ 14957 12449. Parish: Meifod, Montgomeryshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Dol du Llydan (Field).
Grid Reference: SJ 14957 12449. Parish: Meifod, Montgomeryshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Dryll pen llydan (Field).
Grid Reference: SH 60742 16812. Parish: Barmouth, Merionethshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Dwr Llydan (Unclassified).
Grid Reference: SN 83368 27655. Parish: Traean-glas, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Erw fron Llydan (Field).
Grid Reference: SJ 23985 26289. Parish: ,
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Erw henllydan (Field).
Grid Reference: SN 94608 08438. Parish: Penderyn, Brecknockshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Erw Hir and Erw Pen Llydan (Field).
Grid Reference: SJ 13296 55052. Parish: Llanfair Dyffryn Clwyd, Denbighshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin