Okay, bear with me. I'm sure that someone here knows the answer, and maybe it's just a case of my memory mis-firing or synapses getting crossed or something but:

Is there any relation between the Scottish Coronation Stone (the Stone of Destiny, right?) and the pastry known as a scone? Is the Stone of Destiny ever referred to as the Stone of Scone?

I visited England back in the late eighties when I was in high school. When in London, we made the obligatory trip to the Tower, and Westminster Abbey (among other places, of course; mostly I was paying attention to the Churchill WWII sites at the time). While we were in some cathedral-like place I remember one of the teacher-chaperones pointing out a smooth, round rock under a throne (what I might call a stone), and telling me (the memory goes a bit foggy here, so I'll just say I think I remember her telling me) that it was the Stone of Scone.

I've made sense of what I thought that meant in this way: England was the seat of the United Kingdom, and once the English kings had brought Wales and Scotland under their control, they needed the symbols of the other kingdoms to provide them with symbolic legitimacy, so they'd have themselves crowned with Scotland's Coronation Stone (and what, I don't know, from Wales) to symbolically cement their reign over all three kingdoms. Is that right?

Since then, I've often wondered if the pastry known as the scone came about as a popular fad (originating in England, perhaps) celebrating the English king's dominion over Scotland. Does anyone know the etymological history of the scone-as-pastry? Maybe it's just a Scottish pasty that came from Scone, what do I know?