The New International Encyclopædia/Aristobulus of Cassandria
ARISTOBULUS of Cassandria. A Greek historian, born in a city of Chalcidice, but afterwards—later than B.C. 316—a citizen of Cassandria. When eighty-four, he wrote an historical work of unknown title on Alexander the Great, whom he accompanied on his Asiatic campaigns. This work was freely used by later authors, noticeably by Arrian, Strabo, and Plutarch.