You know what it looks like… but what is it called?
TAKE THE QUIZ“Lothair”
The following 2 entries include the term Lothair.
Lothair I
biographical name795–855 Holy Roman emperor (840–855)
Lothair II
biographical name(or III) 1075–1137 king of Germany and Holy Roman emperor (1125–37)
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Merriam-Webster unabridged