Lewis Short
Chordus (noun 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.
Charlton T. Lewis, Charles Short, A Latin Dictionary