Fantastic! The house is now owned by Thomas Crapper and Sons. Thomas invented the flushing loo in Elizabethan times. The business is now run by his son Richard, and the farm is now used as a waste recycling centre. You should probably ring ahead and get permission to visit the premises. Richard was very hospitable and showed me around, and he now knows that the farm was owned by the Leighfields. What is brilliant is that the house is there AND the land is relatively untouched, so it looks the way it must have done when our ancestors were farming there. There are two neighbouring farms that are also owned by Leighfields, but I haven't managed to trace the connection. I have found lots of info on the Leighfields of Park Ground Farm, and I'll try to attach it as a file in future. You can also see the will of John Leighfield via the National Archives. It is hard to read, but it lists the type of house and farm that he left to his wife and son. Keep me posted!