Perhaps you should try some spelling variations:
"louis xviii, duke of bavaria" » "louis xiii, duke of bavaria", "louis xvi, duke of bavaria", "louis xvii, duke of bavaria", "louis xiiii, duke of bavaria"
"louis xvii, duke of bavaria" » "louis xvi, duke of bavaria", "louis xiii, duke of bavaria", "louis xii, duke of bavaria"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"louis xvii, duke of bavaria\") OR (\"louis xviii, duke of bavaria\"))".
• Removing quotes may allow a broader search: (( louis xvii, duke of bavaria ) OR ( louis xviii, duke of bavaria )).
• Adding a wildcard symbol may retrieve word variants: (("louis xvii, duke of bavaria") OR ("louis xviii, duke of bavaria"))*.