Allotment near Cauhys and'r Oddtydd all now in one (Field).
Grid Reference: SJ 10951 75461. Parish: Tremeirchion, Flintshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Bancau (Unclassified).
Grid Reference: SN 10184 35061. Parish: Nevern, Pembrokeshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Bancau bach (Settlement).
Grid Reference: SN 12945 38624. Parish: Eglwyswrw, Pembrokeshire
When recorded: 1844. Primary Source: Bishop's Transcripts. Secondary Source: Place-Names of Pembrokeshire

Bancau bach (Settlement).
Grid Reference: SN 12945 38624. Parish: Eglwyswrw, Pembrokeshire
When recorded: 1825. Primary Source: Bishop's Transcripts. Secondary Source: Place-Names of Pembrokeshire

Bill Caugh (Field).
Grid Reference: SO 12812 63048. Parish: Llandegley, Radnorshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Bryn Cau (Unclassified).
Grid Reference: SH 81564 33338. Parish: Llanuwchllyn, Merionethshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Bryn cau ? (Field).
Grid Reference: SJ 23961 59463. Parish: Nercwys, Flintshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Bryncause Homestead (Field).
Grid Reference: SN 77199 01904. Parish: Blaenhonddan, Glamorgan
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Bryn-llocau (Unclassified).
Grid Reference: SN 61674 65281. Parish: Blaenpennal, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Bwlch Cau (Topographic feature).
Grid Reference: SH 70876 12852. Parish: Llanfihangel-y-Pennant, Merionethshire
When recorded: 2021. Primary Source: Paul Williams Cadair. Secondary Source: none