- The Caesars were rulers of ancient Rome.
- The words "czar" and "kaiser" both came from the word "Caesar.
- " "Caesar" was at first the last name of a famous ruler, Julius Caesar. Then it became a title that meant "emperor."
- The change from being a familial name to a title adopted by the Roman Emperors can be dated to about AD 68/69, the so-called "Year of the Four Emperors".
- The first known bearer of the name "Caesar" was one Numerius Julius Caesar (born before 300 BC)
- After one of his battles in Asia, Julius Caesar sent back a famous message to Rome. It is famous because it told so much in so few words. The message was Veni, vidi, vici. Translated into English the message is, "I came, I saw, I conquered."
- The month of July was named for him.
- Gaius Julius Caesar Augustus is considered the first emperor of the Roman Empire, which he ruled alone from 27 BC until his death in AD 14