(It was my great grandfather.) It occurred 13th December 1879, Morbath to Wiveliscombe. He was only nineteen at the time with his home shed being Yeovil, and still a temporary fireman, being made a 3rd class fireman (ie. goods) in February 1880. Now, elsewhere and much later in his career (3rd April 1911), he was driving a passenger train to High Wycombe out of Paddington on the down main which when it was passing Subway Junction a ballast train was shunted into it from the Crystal Palace loop, ripping into several coach sides and parting the train. One fatality resulted (Frederick John Palmer). The ballast train crew were at fault, and the junction was subsequently remodelled with catch points and extra signals provided. Sadly, the report while it lists the damaged stock, it does not mention the engine at all (probably because it was undamaged), but I guess it could have been something like a County tank.