French Monarch, Husband of Marie Antoinette
Puzzle 3 of ABBA Easy Pack
Question is: French Monarch, Husband of Marie Antoinette
and the answer is: LOUISXVI
Word Meaning:
LOUIS — (historical numismatics) Any gold or silver coin issued by the French kings from Louis XIII to Louis XVI and bearing their image on the obverse side, particularly the gold louis d'ors, originally a French form of the Spanish doubloon but varying in value between 10 and 24 livres.
Definitions from Wiktionary.