Final answer:
James Monroe and Elizabeth Monroe attended Napoleon's coronation at Notre Dame Cathedral. James Monroe's attendance occurred during his diplomatic mission in France before his presidency in the United States.
Step-by-step explanation:
The president and his wife who attended Napoleon's coronation at Notre Dame Cathedral were James Monroe and Elizabeth Monroe. During his time as Minister to France, James Monroe was present at the coronation ceremony of Napoleon Bonaparte in 1804. Although the USA had tense relations with France at various points due to the Napoleonic Wars, Monroe's presence at the event was significant in his diplomatic career. It is worth noting that this experience came before Monroe became the fifth President of the United States. Neither John Adams nor Thomas Jefferson attended the coronation with their respective wives. John Adams served as the second President of the United States and had already returned to America after serving as the first U.S. Minister to Great Britain, while Thomas Jefferson served as Minister to France years before Napoleon's coronation, moreover, Jefferson's wife Martha had passed away decades earlier, in 1782.