The Penrhyn Port Class is a class of three narrow gauge steam locomotives built for the Penrhyn Quarry Railway (PQR).
These locomotives were built by the Hunslet Engine Company between 1883 and 1885 and supplied specifically to work at Port Penrhyn near Bangor, north Wales.
They were a variant of the standard Dinorwic Alice Class design.
[1] The three locomotives of this class were ordered by the Penrhyn Quarry Railway to replace two vertical boilered De Winton locomotives.
Gwynedd is preserved at the Bressingham Steam Museum, Lilian at the Launceston Steam Railway and Winifred spent many years in private ownership in the United States before returning to the UK in 2012 to work at the Bala Lake Railway.