The Famine which took Place in the Reign of Claudius
1 Caius had held the power not quite four years, when he was succeeded by the emperor Claudius. Under him the world was visited with a famine, which writers that are entire strangers to our religion have recorded in their histories. And thus the prediction of Agabus recorded in the Acts of the Apostles, according to which the whole world was to be visited by a famine, received its fulfillment.
2. And Luke, in the Acts, after mentioning the famine in the time of Claudius, and stating that the brethren of Antioch, each according to his ability, sent to the brethren of Judea by the hands of Paul and Barnabas, adds the following account.
Source: Church History (New Advent)