Final answer:
The Middle Ages featured notable individuals like Charlemagne, who united much of Europe, and Thomas Aquinas, a key philosopher and theologian. The legendary King Arthur is also associated with this period.
Step-by-step explanation:
The Middle Ages, a period from the fall of the Roman Empire to the beginning of the Renaissance, yielded a number of famous individuals who made lasting impacts. Significant figures include Charlemagne, the King of the Franks who was crowned Emperor of the Romans in 800 AD, and became a symbol of European unity and strength.
Another is Thomas Aquinas, whose writings in the 13th century helped shape Western philosophy and Catholic theology. Then, there is King Arthur, a legendary ruler said to have led the defense of Britain against Saxon invaders, highlighted by his supposed sword, Excalibur. Though these are but a few characters from a rich historical tapestry, they each have had an influential role in shaping the medieval world narrative.