Amalasuntha ruled Rome after the Roman Empire's fall. She is known for being a wise leader of the Ostrogoths, first as regent, then as the ruling monarch.
Henrietta of England, known as Minette, fled England at the age of only three, then became a very unhappy duchess, followed by her very mysterious early death.
Margherita of Savoy was the first woman to hold the title of Queen of Italy. She's also my favorite historical figure because she's just amazing.
Princess Mafalda of Savoy did nothing except exist, which made Hitler pretty angry. She met a terrible end in a terrible concentration camp.