Allt-y-Pigyn (Unclassified).
Grid Reference: SN 66189 38112. Parish: Cynwyl Gaeo, Carmarthenshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Castell pigyn (Unknown).
Grid Reference: SN 43489 22098. Parish: Abergwili, Carmarthenshire
When recorded: . Primary Source: none. Secondary Source: Carmarthenshire Inventory RCAHMW

Castell Pigyn (Unknown).
Grid Reference: SN 43484 22092. Parish: Abergwili, Carmarthenshire
When recorded: . Primary Source: none. Secondary Source: Carmarthenshire Inventory RCAHMW

Castell-pigyn (Unclassified).
Grid Reference: SN 43041 58709. Parish: Llanarth, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Castell-pigyn (Settlement).
Grid Reference: SN 43367 22042. Parish: Abergwili, Carmarthenshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Coed Pen-y-pigyn (Unclassified).
Grid Reference: SJ 07848 43245. Parish: Corwen, Merionethshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Llys-y-pigyn (Unclassified).
Grid Reference: SJ 06514 55109. Parish: Clocaenog, Denbighshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Nany y Pigyn (Unclassified).
Grid Reference: SJ 08007 43054. Parish: Corwen, Merionethshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Pen y Pigyn (Unclassified).
Grid Reference: SJ 08054 43178. Parish: Corwen, Merionethshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Pen y Pigyns (Unclassified).
Grid Reference: SN 93300 97772. Parish: Carno, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website