What is the name Bryan mean?

This is an interesting English surname. There are a few possible origins to this name: Anglo-Normans who came from a place called Brionne could have brough the name over or the Old Norse name "Brjan" could be the source. The name could also have been an Anglicised form of the famous celtic Irish name "Brien" or "O'Brien. All in all, the true origin of this name is unknown as there are many possible ways it could have come about or places it could have come from. PS, my surname is Bryan