Analysis of information sources in references of the Wikipedia article "يوليان المرتد" in Arabic language version.
Julius Constantius...Constantine had invited him, with his second wife and his young family, to take up residence in his new capital; and it was in Constantinople that his third son Julian was born, in May or June of the year 332. The baby's mother, Basilina, a Greek from Asia Minor, died a few weeks later...
JULIAN THE APOSTATE, FLAVIUS CLAUDIUS JULIANUS, ROMAN EMPEROR (332–63) Emperor from 361, son of Julius Constantius and a Greek mother Basilina, grandson of Constantius Chlorus, the only pagan Byzantine Emperor.