No ancient has told us in any surviving writing when Iambulos lived. Lucian says no more than that he composed a work obviously fabulous but quite amusing; Diodoros of Sicily, the only other author to mention him at all, earns our gratitude by excerpting his romance, apparently under the impression that it was sober fact. Moderns are accordingly vague in dating him. It is obvious that he must be earlier than or contemporary with Diodoros, whose historical work mentions no date later than 54 B.C, but his allusions to events of his own life indicate that he was old enough to take an intelligent interest in the world as early as about 60 B.C, and still alive as late as (perhaps) 21 B.C. Kroll contents himself with indicating that Iambulos is later than Megasthenes, which gives us a range of close on 250 years. I think, however, that we may reduce this very considerably and place Iambulos, if not in any definite year, at least within a period of less than a century.