(Llyn Safaddan) (Unclassified).
Grid Reference: SO 12842 26651. Parish: Llangors, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

[Afon] Llynfi vawr (Topographic feature).
Grid Reference: SS 85959 94452. Parish: Llangynwyd Higher, Glamorgan
When recorded: 1699. Primary Source: Parochialia 3. Secondary Source: none

[Llyn] Korsudd y Barcut (Topographic feature).
Grid Reference: SH 76201 39455. Parish: Trawsfynydd, Merionethshire
When recorded: 1699. Primary Source: Parochialia 2. Secondary Source: none

Aberllynfi (Settlement).
Grid Reference: SO 17041 37725. Parish: Aberllynfi, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

ABERLLYNFI (Civil Parish).
Grid Reference: SO 16784 37140. Parish: Aberllynfi, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Aber-Llynfi House (Unclassified).
Grid Reference: SO 17719 38941. Parish: Tregoyd and Felindre, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Abery Llyn (Field).
Grid Reference: SH 79374 58257. Parish: Betws-y-coed, Caernarfonshire
When recorded: Circa 1840. Primary Source: none. Secondary Source: Cynefin

Afon Cwm ystradllyn (Unclassified).
Grid Reference: SH 54275 43123. Parish: Dolbenmaen, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Afon cwm -ystradllyn (Unclassified).
Grid Reference: SH 52129 42921. Parish: Dolbenmaen, Caernarfonshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website

Afon llynf (Unclassified).
Grid Reference: SO 14131 32555. Parish: Talgarth, Brecknockshire
When recorded: 1898-1908. Primary Source: OS 2nd Edition Maps. Secondary Source: GB1900 website