Afon Ceulan (Unclassified).
Grid Reference: SN 65662 89466. Parish: Ceulan-a-Maesmor, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Afon Ceulan (Unclassified).
Grid Reference: SN 68795 90232. Parish: Ceulan-a-Maesmor, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Blaen Ceulan Mine (Disused) (Unclassified).
Grid Reference: SN 71325 90472. Parish: Ceulan-a-Maesmor, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Blaen-cwm-ceulan (Unclassified).
Grid Reference: SN 67331 79707. Parish: Melindwr, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ceulan (Unclassified).
Grid Reference: SN 86929 97526. Parish: Llanbrynmair, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ceulan (Field).
Grid Reference: SH 51743 78009. Parish: Pentraeth, Anglesey
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Ceulan Cottage (Unclassified).
Grid Reference: SO 29549 09364. Parish: Llanfoist Fawr, Monmouthshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ceulan goch (Field).
Grid Reference: SN 43162 21103. Parish: Carmarthen St Peter, Carmarthenshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Ceulan Mills (Unclassified).
Grid Reference: SN 65612 89399. Parish: Ceulan-a-Maesmor, Cardiganshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Ceulan Mine (Disused) (Unclassified).
Grid Reference: SN 85894 97252. Parish: Llanbrynmair, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website