 Initially growing up in Bithynia, raised by his maternal grandmother, at the age of seven Julian was under the guardianship of Eusebius, the semi-Arian Christian Bishop of Nicomedia, and taught by Mardonius, a Gothic eunuch, about whom he later wrote warmly.After Eusebius died in 342, both Julian and Gallus were exiled to the imperial estate of Macellum in Cappadocia.Here Julian met the Christian bishop George of Cappadocia, who lent him books from the classical tradition.