Part of Tarren Ffoel (Field).
Grid Reference: ST 07284 94521. Parish: Llanwonno, Glamorgan
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Pentarren (Field).
Grid Reference: SN 48401 51654. Parish: Llanwenog, Cardiganshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Tarren Dynwyd (Topographic feature).
Grid Reference: SN 77452 07953. Parish: Cilybebyll, Glamorgan
When recorded: 1699. Primary Source: Parochialia 3. Secondary Source: none

Tarren Esgob (Topographic feature).
Grid Reference: SO 23838 31354. Parish: Glyn-fach, Brecknockshire
When recorded: 1699. Primary Source: Parochialia 2. Secondary Source: none

Tarren fach (Field).
Grid Reference: ST 07135 94382. Parish: Llanwonno, Glamorgan
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Tarren Hengwm (Unclassified).
Grid Reference: SN 78258 93859. Parish: Uwchygarreg, Montgomeryshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Tarren rhesk (Topographic feature).
Grid Reference: SN 85759 00265. Parish: Resolven, Glamorgan
When recorded: 1699. Primary Source: Parochialia 3. Secondary Source: none

Tarren Tormont Homestead &c. (Field).
Grid Reference: SO 08700 21578. Parish: Llanfeugan, Brecknockshire
When recorded: 1841. Primary Source: none. Secondary Source: Cynefin

Tarren y ddau saint (Unclassified).
Grid Reference: ST 05233 87216. Parish: Llantrisant, Glamorgan
When recorded: 1699. Primary Source: Parochialia 3. Secondary Source: none

Tarren y Garth (Topographic feature).
Grid Reference: SS 86979 93820. Parish: Llangynwyd Higher, Glamorgan
When recorded: 1699. Primary Source: Parochialia 3. Secondary Source: none