Fire Queen was one of two identical locomotives built for the Padarn Railway, which connected the Dinorwic Quarry near Llanberis in north Wales with the port at Y Felinheli. The railway was opened in 1840 using horses to pull the slate trains. It replaced the even earlier Dinorwic Railway which opened in 1824.
From Wikipedia, because this engine is somewhat elusive.
The engine actually ran on 4ft gauge railway, 8½’ thinner than standard gauge.
For obvious reasons, I have scaled this model to standard gauge.