Georgia Lampbeth

This question doesn't fit under the category. Since the movie Titanic came out in 1997-1998 I have been windering if there really was a Rose Dewitt Bukater and a real Jack Dawson, and when I checked your passeger list or any passenger list I have not found either of them. So my question is Are Jack and Rose real people who where on the Titanic?
One way you can tell they are made up charaters is that in the movie Cal and Rose were in suite's B 52-54-56 which would have been impossible on the real Titanic since they were in real life the suite's occupied by owner J. Bruce Ismay...