Lewis & Short

2. Chordus, i, m., a Roman cognomen; esp.: H. Cremutius Chordus, an historian of the times of Augustus and Tiberius, Quint. 1, 4, 25; Tac. A. 4, 34; Suet. Aug. 35; id. Calig. 16; Sen. Cons. ad Marc. 1, 2.