_Connu_! _Connu_! Everything life has to offer is known to us, couldn't be known better, from the film.
So Aaron tied his tie in front of a big Venice mirror, and nothing was a surprise to him.

He found a footman hovering to escort him to the dining-room--a real Italian footman, uneasy because milady's dinner was unsettled.

He entered the rather small dining-room, and saw the people at table.
He was told various names: bowed to a young, slim woman with big blue eyes and dark hair like a photograph, then to a smaller rather colourless young woman with a large nose: then to a stout, rubicund, bald colonel, and to a tall, thin, Oxford-looking major with a black patch over his eye--both these men in khaki: finally to a good-looking, well-nourished young man in a dinner-jacket, and he sat down to his soup, on his hostess' left hand.

The colonel sat on her right, and was confidential.

Little Sir William, with his hair and his beard white like spun glass, his manner very courteous and animated, the purple facings of his velvet jacket very impressive, sat at the far end of the table jesting with the ladies and showing his teeth in an old man's smile, a little bit affected, but pleasant, wishing everybody to be happy.
Aaron ate his soup, trying to catch up.