No. 1719 "Lady Nan" is a 0-4-0ST steam locomotive that was built by Andrew Barclay in 1920 at Kilmarnock. It was delivered new to J. and R. Howie Ltd., at the Hurlford Fireclay Works, near Kilmarnock where it became Hurlford Fireclay Works No. 2. The locomotive worked there until it was sold in 1959 to Glenfield & Kennedy ltd. of Kilmarnock. There it was repaired using parts from a 1903 Barclay locomotive and was given the name 'Glenfield No. 2'.
Due to diminishing rail traffic, the locomotive was sold in 1972 to the local scrap merchant. Later that month, just before scrapping was about to commence, the locomotive was purchased. It was moved for storage purposes to the National Coal Board at Backworth, Northumberland in 1972 and was then moved again in 1973 to Radstock for a further period of storage. In 1975 the locomotive was moved to Cranmore which was by then established as the base for the East Somerset Railway.
'Glenfield No.2' entered Cranmore Works during 1978 and was the subject of a complete general overhaul. Being completed and fitted with vacuum brake gear, 'Glenfield' emerged in 1985 in blue livery and was renamed 'Lady Nan'.
For several years, 'Lady Nan' was loaned to the National Railway Museum, but it returned to Cranmore during 2000.
A second overhaul of the locomotive was started in 2005 which enabled it to return to service in 2007.
The boiler certificate expired in 2017 but a quick overhaul enabled the locomotive to be put back into service just a few months later in the same year.
'Lady Nan' still resides at the East Somerset Railway in operation today.