King Ferdinand of Spain (1452-1516), and his wife, Queen Isabella of Spain (1451-1504), who were known as the Catholic Monarchs. They are famous for giving Christopher Columbus the money and ships to make the journey on which he discovered America.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
Dictionary pictures of the day
Do you know what each of these is called?
Click on any of the pictures above to find out what it is called.