Don't under estimate yourself Squiggle because you are spot on. Well done, because it wasn't easy and there are some clues that were correct but meant to make it a bit harder,
DaveR did post a photo of the property and it was open when Dave passed it, I suppose with no roof, no door or windows you could call it open, but you couldn't go in it because it's fenced off!
It's just a ruin now but in it's heyday looked quite an attractive building. A former workmate of Tellytubby sent him the postcard and her relative once lived in this delightful cottage which is on the banks of the Afon Ystrad (Vale River)
Dr Samuel Johnson (1709-1784), English wit and author of the Dictionary of the English Language, on the 308th anniversary of his birth.
Johnson’s dictionary appeared in 1755 and remains a landmark achievement of English prose, an extraordinary individual undertaking that included over 42,000 entries and took its writer nine long years to assemble.