Y Groeslon is a 19th century village which takes its
name from the point where the Llandwrog to Moel Tryfan
road (Lôn Cefn Glyn) crosses the Porthmadog to
Caernarfon road and the Nantlle railway and its successors.
The earliest buildings appear to have been a smithy and
a public house / railway station, established in the
1840s or '50s, shortly followed by other buildings along
In the 1870s and 1880s more substantial buildings were
constructed according to the specification of the Newborough
estate, mainly on Lôn Cefn Glyn.
Image: The Pen
Nionyn Public House and the Post Office.