Then something happened that made him jump about a foot in the air - several people behind him screamed.
"What the ––?"
He gasped. So did the people around him. About twenty ghosts had just streamed through the back wall. Pearly-white and slightly transparent, they glided across the room talking to one another and hardly glancing at the first years. They seemed to be arguing. What looked like a fat little monk was saying: "Forgive and forget, I say, we ought to give him a second chance ––"
"My dear (i) Friar, haven't we given Peeves all the chances he deserves? He gives us all a bad name and you know, he's not really even a ghost –– I say, what are you all doing here?"
A ghost wearing a ruff and tights had suddenly noticed the first years. Nobody answered.
"New students!" said (ii) the Fat Friar, smiling around at them. "About to be Sorted, I suppose?"
A few people nodded mutely.
"Hope to see you in Hufflepuff!" said (iii) the Friar. "My old house, you know."
"Move along now," said a sharp voice. "The Sorting Ceremony's about to start."
(J. K. Rowling, Harry Potter and the Sorcerer's Stone)
What is the ghost’s name: Fat Friar, the Fat Friar, or other something? The first thing that arose in my mind is his is ‘the Fat Friar’, just as these names: the United Kingdom, the Philippines, which give referentiality/defiteness on united kingdom and Philippines. But there being three types of calling, I’m not sure if my guessing is proper.