How is Augustus related to Julius Caesar?
Julius Caesar is the uncle of Augustus Caesar and later adopted
son and heir.
Octavian, the man who would become Augustus, was Julius Caesar's
great nephew. He was the son of Caesar's niece, Atia, who was the
daughter of Caesar's sister, Julia. Making Octavian more popular
among the supporters of the slain Julius Caesar was the fact that
Julius Caesar adopted Octavian as his son.