Complex sentence: Plutarch (ca.46--120 AD), Tertullian, Orosius and Diodorus Siculus mention this practice however, Livy and Polybius do not.
Split into simpler sentences: Plutarch (ca.46--120 AD) mentions the practice, as do Tertullian, Orosius and Diodorus Siculus. However, Livy and Polybius do not.