I am sorry to hear about the heartbreak caused by not only the tragedy, but also the mammoniacal way in which the personal objects of Amanda were, and are still, treated...although I must admit, in all honesty, that I would like very much to see them, along with the other artifacts -- realizing, all the while, that one of the main reasons for having the desire is that I am, or have become, another victim of the titanic marketing of the Titanic treasures.
(I think my brain just died on that last sentence) Where was I? Anyway, I will see if I can find any info on the connection of which you so eloquently spoke and get back to you. In the meantime, there is something you might look into... A recent book called "Looking for Carroll Beckwith" has surfaced which tells the apparently true story of an Indiana Police Captain named Snow who proves to be the current incarnation of Silas' grandson (or great grandson), J. Carroll Beckwith -- the artist from Hannibal who roomed with John Singer Sargent in Paris. In the book, he calls his wife Amanda, although her name was apparently Bertha. Maybe this Amanda who is in the heart of the reincarnated Carroll is really your Amanda, and he is experiencing "future grief", for lack of better words, for the tragedy which will eventually hit the family. Artists, as you must know, are in touch with higher forces, and as such, may well be in touch with the future, since, alas, they are among the ones who lead the way.
Please forgive my verbosity. I think it is a family trait, coming down from the scribe Baruch, I suspect, or maybe Hermes. If you read the works of George Beckwith, the first secretary of the American Peace Society, I think you will see what I mean.