Emrys (Merlin) everyone always forgets that its his proper name <---- No we don't. We just call him Merlin because that's what he goes by. Nobody calls him by his proper name. You can hold too much power over someone by knowing their proper name.
And what's even more mind-blowing is that the hospital Dr. Constantine worked in was called Albion Hospital. I'm pretty sure BBC's had it all planned from the start, how best to torture its viewers. "Never ignore a coincidence," as the Doctor says.