It is the oldest pub in Dublin and a famed watering hole frequented by political rebels like Robert Emmet and Michael Collins to literary greats like Brendan Behan and James Joyce. Now the Brazen Head on Bridge Street in the heart of the Liberties is close to being sold for €15 million to a low-key London fund and a talented hotelier who created one of the best boutique hotels in Ireland. The large purchase price, and the fact that the deal is being closed in the middle of a pandemic, is a big vote of confidence in a beleaguered sector…