Something interesting I found:

"Does the identity of the bust signed by JK Rowling give us a clue to one of the deaths in book 7? As we reported earlier, she finished the seventh book while staying at the five-star Balmoral Hotel in Edinburgh. Before checking out, she marked the occasion with a tantalising inscription scribbled on the back of a Roman-style bust.


Quote:
According to one report, the bust depicts Hadrian, the Roman emperor who built the eponymous wall to divide Roman Britain from the “barbarians” in the north.

The hotel says the identity of the bust incorrect, but if it is correct here are a few very interesting facts. The wall is known as Hardrain's wall. After falling into ill repair, it was later restored by Emperor Septimius Severus and passes near the Yorkshire village of Snape.

This is leading many to believe that Potion Master Severus Snape is one of the deaths in book 7. We will have to wait until July 21 to discover if this more than a rumor."