Caesar entered Alexandria in triumph, but was then attacked by the citizens and Ptolemy XIV's army and had considerable difficulty in maintaining his position in the Regia or "Royal City". Cleopatra was able to win over by her charms first Caesar and later Antony, who lived with her in Alexandria from 42 to 30 B.C. Augustus enlarged the city by the addition of th suburb of Nicopolis. At this prosperous period Alexandria was said to have a population of more than half a million; the Greek element predominated, followed by the Egyptian, while there was also a separate Jewish community, originally established in the time of Ptolemy