 The rooms that Caledon Hockley, Rose DeWitt Bukater and Ruth DeWitt  Bukater occupied (B52, B54 and B56) were actual rooms on the real  Titanic. They were originally booked by J.P. Morgan (III) (qv),  but he canceled before the ship sailed. Morgan had a controlling  interest in International Mercantile Marine, a conglomerate that  owned the White Star Line. Bruce Ismay booked the rooms following  Morgans cancellation. (See Goofs.)