What about the Crimson Stone? If Dracula still wore it during Trevor's time, it would a good way to identify him. Of course, it's not a 100% reliable deduction, but it would be a good enough reason for a Belmont to suspect he is dealing with his ancestor's sworn enemy.
This depends largely on what one considers the rock to be.
Y'all know my personal theory that it's a form of a Philosopher's Stone already, so I'll not delve into that again.
The only reason Leon knew what it was was because Joachim mentioned it offhandedly and Rinaldo clarified more about it when pressed. All he knows about it is that it's a red rock that turns vampire souls into power and can trade humanity for all that vampire power goodness.
Now, even if we assume he passed every possible detail down to his kids and grandkids and they passed it down to theirs, do we
really think those details stayed verbatim all that time? We all know the Telephone Game and how details frequently become obscured or lost altogether with the passage of time. Now, 400+ years? In medieval times? Ain't a bloody
chance the Belmonts by Trevor's time know the exact details of the Stone, assuming they know any details at all by that point. Even if we assume circumstances like Leon passing information to the Church and the Church then keeping records, the Belmonts spent a great deal of time as pariahs, so why would they even be
privy to that kind of sensitive information anymore? Doubly so when one considers that for many years their top priority was mere
survival in a land that loathed their very existence, when remembering the details of a magic rock would take second nature to staying alive.
The best explanation/chance I'm willing to believe is that later Belmonts know Dracula has a magic rock that gives him fabulous dark powers, and little more than that.
But by that point, there're
plenty of other magic rocks that grant fabulous powers already in the world alongside the Crimson Stone--Rebound Diamond, Sypha's crystal thing, etc. etc. Why, assuming on the extremely plausible likelihood many or all details of Mathias and the Stone were lost to the passage of time, would everyone not simply chalk Dracula's magic rock to be just another magic rock that does evil shit instead of good shit? I just don't see them putting the pieces together from mere scraps of information they very likely don't even have anymore.
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As for the actual thread topic:
I'm seeing a lot of perspectives that the Belmonts knowing the truth and history of their family's relationship with Dracula lends more significance and weight and even intimacy to their dynamic. While I would under many, many other circumstances agree that the idea of "mortal enemy was once a friend way back and their fall from grace is what instigated it all" is a really nice plot element, in CV's case I think it actually
lessens the Belmont-Dracula dynamic.
Plot's already used the Batman analogy, so I won't waste time reiterating it. But the principle is basically just that.
The Belmont-Dracula dynamic is important
because the Belmonts (and possibly Dracula, depending on whether or not we believe he retains all his memories of his past life at all times) don't know their own history. The tragedy does not lie in them knowing, it lies in their ignorance.
This entire rich history of broken friendship and love lost and the falling from grace of BOTH sides of the rivalry--nobody's the wiser to it. The cycle continues because of its very nature, not because of the circumstances that started it.
It's kind of like those plots you see in films where the hero does a valiant act of self-sacrifice...and the person or people he saves never even know of his heroism. That the people were saved is what matters, not that they know The Hero sacrificed himself or his freedom or whatever else to do so. It's that bittersweetness that lends plot points like that poignancy, and the principle is the same here.
Dracula is no longer Mathias, and the Belmonts are no longer valiant and revered warriors of the Church like Leon was. Neither is what they formerly were, so that past no longer holds weight on the present. In fact, that their respective histories hold no major significance to the current iteration of the rivalry and relationship
IS what gives it all weight. The insignificance is what
makes it significant.
Here are these two players on the grand stage, battling their lives away across the centuries, and neither is seemingly aware that they were once the closest of allies. Their ancestors' histories no longer matter. The bonds of love and friendship once held and tragically shattered no longer matter. All that matters is the
battle, the cycle of good vs. evil, the crusades against one another that will either save or damn humanity.
It's actually all very simply a form of standard theatrical tragedy, really.
The tragedy is not that the two are locked in endless combat and hatred for one another. The tragedy is that two are locked in endless combat and hatred for one another
and don't even know why (or even think to QUESTION why) anymore.
Dracula doesn't go after humanity because he's still pissed off at God from his long-past human days. The Belmonts don't go after Dracula because they're still feeling the effects of Mathias' betrayal and wish to carry on Leon's vendetta.
They fight each other because they must. Because they are the two sides of the same coin, the antithesis of each other. They are each other's foils, plain and simple. History, betrayal, lost love, lost friendship, none of these things matter anymore. All that matters is the state of conflict that allows each of the two to thrive and continue the cycle of battle.
Having the entire cycle be relegated to what basically amounts to "oh well we know you were our bro way back in college and we're still pissed you joined the rival football team" kind of subsumes and demeans the whole point of the vicious and (mostly) fruitless cycle Dracula and the Belmonts have been locked in for so long.
A Belmont being aware of the history would only hold weight in few extremely specific circumstances, and honestly all the circumstances I can think of that validate it involve Julius, due to his role in ending the cycle and still being present when it begins to renew itself. Pretty much every other Belmont but him can go pound sand as far as I see any value in them knowing Leon and Mathias' history.