Yes, Dracula sailed from the Bulgarian port of Varna, but he was not probably from Hungary. Of course, you know that when the novel was written there was no independent Hungarian state, as it was part of the Austro-Hungarian Empire, the name being the English version of the title that resulted from the 1867 Compromise that elevated the Hungarians to a privileged position within the Habsburg Empire.
It doesn't sound as though Dracula came from the Austro-Hungarian Empire, though. Jonathan Harker travels east from "Bistritz", which is a Germanicized version of Bistrița, within the Empire but near its eastern borders, and then east through the Borgo Pass out of the Austro-Hungarian Empire. Part of what makes the journey terrifying is that he leaves the security of a major power and finds himself in the wild and lawless northern territories of the newly independent Kingdom of Romania.
Had Dracula come from the Austro-Hungarian Empire, it would still likely have been easier for him to travel West in the Empire, rather than go south to the Bulgarian port of Varna and risk a voyage by sea.
ἡ δὲ κἀκ τριῶν τρυπημάτων ἐργαζομένη ἐνεκάλει τῇ φύσει, δυσφορουμένη, ὅτι δὴ μὴ καὶ τοὺς τιτθοὺς αὐτῇ εὐρύτερον ἢ νῦν εἰσι τρυπώη, ὅπως καὶ ἄλλην ἐνταῦθα μίξιν ἐπιτεχνᾶσθαι δυνατὴ εἴη. – Procopius
Ummaka qinnassa nīk!
*MySmiley*
