There have been three kinds of Bavarian consorts in history: duchesses, electresses and queens.
The longest serving house was the Wittelsbach dynasty, who played a major role in Bavarian history.
This meant that there may have been more than one Duchess of Bavaria at the same time, due to messy inheritance among heirs.
Since 555 there have been 99 Bavarian consorts: 78 duchesses, 11 queens, 10 electresses and one margravine.
The number does not add up because Elizabeth of Lorraine and Caroline of Baden, held two titles.