Unless, and this is a farfetched speculation, it's related to CV, and takes place between LoI and CV3. Urgh, it just came to me. Recall when IGA was saying how during that time, the Belmonts WOULD NOT encounter Dracula, but were fighting OTHER villains(vampires). That would make "Lords" a fitting word, the plural form meaning more than one "Lord of Shadow". Also, I recall how IGA kept saying that, IN CV, it would be hard NOT to have Dracula present when the title is "Akumajo Dracula". Maybe having a title with no connection to Dracula, it's the only way IGA can make a "side story" without bringing Dracula himself in, as well as not opt for the unpopular Japanese "Kyassuruvania".
Of course, it's just a stupid theory. But it would fit considering what we seen of Lords of Shadow, and how the whip-wielding knight was decked in medieval armor. Wishful thinking.
As for the whip-wielding heroes. Well, it's a big deal considering it's rare to see good whip wielding heroes. The cliche is leaning towards sword warriors. That's why when you hear, "Whip wielding", you immediately think of Indiana Jones and Castlevania.