Meanings of Welsh Place Names


LLANFAIRPWLLGWYGYLLGOGERYCHWYRNDROBWLLLLANTYSILIOGOGOGOCH


The name of this famous Welsh village may be a bit of a mouth full.  It means:

Saint Mary's Church in the hollow of white hazel near a rapid whirlpool and the Church of Saint Tysilio near the red cave.

Aber - this denotes the mouth of a river, a small stream, or the confluence of a river. It is usually followed by the name of the river. Examples are:-
Abercraf - mouth of the river
Craf (= garlic).
Abernant - mouth of a stream.
Aberllynfi - mouth of the river
Llynfi (= smooth).
Betws - a house of prayer. This is usually followed by the location of the prayer house or by its founder's name. Examples are:-
Betws y Coed - prayer house in the wood.
Betws Garmon - prayer house of Garmon.
Betws Ifan - prayer house of Evan.
Blaen - the source of a river or the head of a valley. (Blaenau is the plural form). Examples are:-
Blaen-bedw - source of the river Bedw (-- birch trees). Blaen-cwm - head of the valley. This is a village situated at the head of the Rhondda valley.
Blaenau Ffestiniog - heads of the valleys in the land of Ffestin.

Bwlch - a pass or gap.
Bwlch-mawr - big pass.
Bwlch y Ddau Faen - pass of the two stones.
Bwlch y Mynydd - mountain pass.

Capel - a chapel.
Capel Dewi - chapel of David, the patron Saint of Wales. 
Capel Seion - chapel of Zion.
Capel Newydd - new chapel
Castell - a castle.
Castell Pictwn - Picton's castle.
Castell Coch - red castle
Castell Maen - stone castle
Coed - a wood.
Coed.y-bryn - wood of the hill.
Coed-yr-Ystrad - wood of the vale.
Coed-y-brenin - King's wood.
Cwm - a shallow valley.
Cwm-bach - a small valley.
Cwm Hirnant - valley of the long stream.
Cwm Ela'i - valley of the Elai river.
Dan - below (also Tan)
Dan-y-coed - below the wood.
Dan-y-graig - below the rock.
Tanygrisiau - below the steps.
Eglwys - a church.
Eglwys-fach - little church.
Eglwys y Drindod - Trinity church.
Eglwys Wen - White church.
Esgair - a ridge.
Esgairdawe - ridge of the river 
Tawe
(= quiet).
Esgair Hirnant - ridge of the long stream.
Esgair Ddu - black ridge.
Ffridd - a mountain pasture or sheep-walk.
Ffridd Fawr - big mountain pasture.
Ffridd y Foel - mountain pasture of the bare hill.
Ffriddisaf - lower mountain pasture.
Ffynnon - a well or spring.
Ffynnongroyw - clear spring or well.
Ffynnon Taf - Taf's well.
Ffynnon-bedr - St. Peter's well.
Gelli - a grove.
Gelli-aur - golden grove.
Gellilydan - wide grove.
Gellifelen - yellow grove.
Glan - a river or water bank.
Glan-Ilyn - the bank of a lake.
Glan-y-don - bank or shore of the wave.
Glanyrafon - bank of the river.
Glyn - a glen or valley.
Glynteg - fair glen.
Glynebwy - glen of the river Ebwy.
Glyncorrwg - glen of the two Corrwg streams.
Gors - from Cors, meaning a bog, fen or marsh.
Gors Lydan - wide marsh.
Gorseinon - the fen of Emion.
Gors-goch - red marsh.
Hafod - a summer dwelling or summer pasture.
Hafod yr Ynys - summer dwelling of the island.
Hafod-wen - fair summer dwelling or pasture.
Hafod Fraith - mottled summer pasture.
LIan - a church. This is usually followed by the name of the saint to whom the church is dedicated..
Llanddewi - Church of St. David.
Llanbadrig - Church of St. Patrick.
Llanfair - Church of St. Mary.(LIan- may also refer to a parish).
Llwyn - a bush or grove.
Llwyn-onn - ash grove.
Llwynypia - bush of the magpie.
Llwyndyrys - tangled grove.
Llyn - a lake or pool.
Llyn Helyg - lake of the willows.
Llyn Elsi - Elsi's lake.
Llyn Hir - long lake.
Maes - a field or plain.
Maes-glas - green field.
Maes-y- bont - field of the bridge.
Maes-y-crugiau - field of the cairns.
Moel - a bare hill.
Moel Garegog - rocky, bare hill.
Moe Sych - dry, bare hill.
Moel y Llyn - bare hill of the lake.
Mynydd - a mountain.
Mynydd Coch - red mountain.
Mynydd Uchaf - highest mountain.
Mynydd Margam - Morgan's mountain.
Nant - a stream.
Nantglyn - stream of the glen.
Nant-y-pandy - stream of the fulling mill.
Nantgarw - rough stream.
Pant - a hollow or valley.
Pantycelyn - hollow of the holly trees.
Pant yr Ynn - hollow of the ash trees.
Pantysgal log - hollow of thistles.
Pen - top or end.
Pen-twyn - top of the hill.
Penrhos - end of the moorland.
Pentraeth - end of the beach.
Pentre - a village.
Pentre Isaf - lower village.
Pentre'r Felin - village of the mill.
Pentre Bont - village of the bridge
Pont - a bridge.
Pont Sian - Sian's bridge.
Pontaman - bridge over the river Aman.
Pontgarreg
- bridge of stone.
Pwll - a pool or pit.
Pwll-glas - blue pool.
Pwll-y-glaw - the rain pool.
Pwll defaid - sheep's pool or pit.
Rhiw - a slope or hillside.
Rhiwlas - green slope.
Rhiwderyn - bird's hillside.
Rhiw Cilgwyn - hill of the white nook.
Rhos - moorland.
Rhos-yr-hafod - moorland of the summer dwelling. 
Rhosbwlch
- moorland of the pass.
Rhos-goch - red moorland.
Rhyd - a ford or stream.
Rhyd-y-foel - ford of the bare hill.
Rhydfach - little ford.
Rhyd-ddu - black ford.
Tal - end or front.
Tal-V-bont - end of the bridge.
Talgarreg - end or front of the rock.
Talerddig - end of the little garden.
Tre - a homestead or town (also Tref).
Treffynnon - homestead of the well.
Trefecca - homestead of Becca.
Trefdraeth - homestead or town of the beach.
Ty - a house.
Tyddewi - house of St. David.
Ty -hen - old house.
Ty newydd - new house.
Tyn - (from Tyddyn) - a small holding.
Tyn-y-pwll - small holding of the pool.
Tyn-cwm - small holding in the valley.
Tyn-y-Pistyll - small holding near the well or spring.
Waun - (from Gwaun) - moorland or meadow.
Waun Fawr - large meadow.
Waun Lwyd - grey meadow or moorland.
Waunarlwydd - lord's meadow.
Ystrad - a wide bottomed valley.
Ystradmynach - monk's valley.
Ystradowen - Owen's valley.
Ystradyfodwg - valley of St. Tyfodwg.
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