Cleopatra VII was the last ruler of Egypt's Ptolemaic Dynasty, reigning for 21 years from 51 BC until her death in 30 BC. She was born in Egypt and became co-ruler with her brother Ptolemy XIII after their father's death. In 47 BC, Cleopatra had a son, Caesarion, with Julius Caesar during their romantic relationship. She later allied with Mark Antony and committed suicide at age 39 using an asp rather than be captured by Octavian.