Elizabeth Bartley

Elizabeth Bartley is a vampire from Konami's Castlevania series. She appears as a boss character in Castlevania: Bloodlines, which was published on the Sega Genesis in 1994.

Background
In the early 1600s, Bartley was executed for vampirism, but was revived nearly 300 years later by a witch named Drolta Tzuentes. To revive her uncle, Count Dracula, Bartley had the Crown Prince of Austria assassinated, and thus led Europe into the chaos of World War I. In 1917, the events in Bloodlines, she attempted to stop heroes John Morris and Eric Lecarde from thwarting the resurrection of the Count. Her plan, however, ultimately failed, as she, and later Dracula himself, were slain by the two vampire hunters.

Trivia

 * Bartley's Japanese name is an antiquated way to render Erzsébet Báthory's name, and was probably intended as a direct reference to the historic figure.
 * Countess Báthory is associated with vampire legends, having been accused of killing servant girls and bathing in their blood to keep herself forever young. Additionally, the countess was distantly related to the historic Vlad III Drăculea, but, contrary to the game background, she was a cousin rather than his niece.
 * In Judgment, the bathing in blood element of her back story is given to the game's version of Carmilla. They are likely separate characters though. Eric's ending mentions "Dracula's niece" (Elizabeth Bartley), not Carmilla (who has no known blood ties to Dracula).
 * The lead female antagonist in the canceled game Castlevania: Resurrection is named The Countess, and may in fact be Countess Elizabeth Bartley. She is portrayed as Dracula's lover in this game, however, so this link is uncertain.
 * In the fight against her, she either transforms into or summons Medusa, and is referred to as Medusa in the credits of the American localization. The in-game animation is unclear as to whether this is a form she takes or a summon she performs, as the sprites are simply swapped out. The color and uniquely dragon-like form of the Medusa might be a reference to the historical Báthory's coat of arms, which featured a long, low green dragon with prominent claws and whip-like tail.
 * The game states that Elizabeth had assassinated the Crown Prince of Austria to trigger the events of World War I. In reality, the crown prince, Rudolf, took his own life in 1889. It was his cousin, the Archduke Franz Ferdinand, whose assassination in 1914 led to the war.
 * Elizabeth Bartley was a planned character for Castlevania: Symphony of the Night but was scrapped.