Houseboy:
r. O'Reilly bought the desk from his brother-in-law, Sir Joseph Trutch. This painting is one of Kathleen's. Perhaps the maid is right - Kathleen may be talented.
Since Mr. O'Reilly is away on business a great deal, this room has many uses. Of course, his study is used for meetings and business, but, it is also the library, and most important for you, it's Mrs. O'Reilly's morning room. She takes her tea in here. And after dinner, the men come inside to smoke. Many uses, one room...just like my home!
Step back from the door a bit and look at the surrounding wall.