That's true - it's the name of a character in the Japanese anime "Hellsing", but I heard it was used before, in films with
Christopher Lee and
Peter Cushing.
But anyway - I first heard about the name only, then I researched more about where it came from and eventually I ended up with the character from "Hellsing."
Not a good association to have, but this thread here focuses on the name itself only, not on the persons/characters that have carried the name.
People have been saying it sounds French - especially for the -card part, so who knows, perhaps it also has been a real (sur)name in
France.