Headscratchers / House of Frankenstein

• So... is this Dracula the original one that Bela Lugosi played, is it Alucard or is it a different Dracula? Also, it is supposed that Dracula's body was burned by his renegade daughter in Dracula's Daughter. Some folks found his skeleton and put him in a spectacle? Marya herself sold it? Or this is Alucard? Or another relative? The movie and the sequels never revealed it, and in Abbott and Costello Meet Frankenstein the characters mentions the Dracula in that movie (played by Bela Lugosi) as "the original Count Dracula". So...