Details on Livia
Livia (58 B.C. - A.D. 29) was the first empress of Rome, the wife of the first emperor, Augustus (r. 27 B.C. - A.D. 14), and mother of the second emperor, Tiberius (42 B.C. - A.D. 37). Livia (who became Julia after the death of Augustus) exerted heavy influence on the emperors throughout her long life.
Augustus died in 14 A.D. According to his will, Livia became a part of his family and was entitled to be called Julia Augusta from then on.
Julia Augusta exerted strong, but unwelcome influence on her son Tiberius. After the emperor Tiberius left Rome, he would not even return for her funeral in 29 A.D.