Allt Cwm-erllys (Unclassified).
Grid Reference: SN 31774 41522. Parish: Llandyfriog, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Allt Henllys (Unclassified).
Grid Reference: SN 11816 39414. Parish: Nevern, Pembrokeshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Allt llystyn (Unclassified).
Grid Reference: SN 52786 30996. Parish: Llanfihangel Rhos-y-corn, Carmarthenshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ballys (Field).
Grid Reference: SN 34324 13268. Parish: Llansteffan, Carmarthenshire
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Berth-llysllew (Unclassified).
Grid Reference: SH 47094 68367. Parish: Llanidan, Anglesey
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Big Gellys (Field).
Grid Reference: SJ 36842 57748. Parish: Allington, Denbighshire
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Braich-yr-henllys (Unclassified).
Grid Reference: SH 61501 03443. Parish: Tywyn, Merionethshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Bridellys (Unclassified). Variant of head-name Bridell / Bridell
Grid Reference: SN 17600 42000. Parish: Bridell, Pembrokeshire
When recorded: 1399. Primary Source: ERStD. Secondary Source: PNPem

Bronllys (Unclassified).
Grid Reference: SO 14579 34964. Parish: Bronllys, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Bronllys (Unclassified).
Grid Reference: SO 10358 71603. Parish: Llanbister, Radnorshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website