3. A physician at Rome, who was the parnamour of Livia (or Livilla), the wife of Drusus Caesar, the son of the emperor Tiberius, and who joined her and Sejanus in their plot for poisoning her husband, A. D. 23. (Plin. Nat. 29.8; Tac. Ann. 4.3.) IIe was afterwards put to the torture. (Tac. ibid. 100.11.) He is supposed to be the same person who is said by Caelius Aurelianus (de Morb. Acut. 2.38, p. 171) to have been one of the followers of Theniison, and whose medical observations on hydrophobia and some other diseases are quoted by him. He appears to be the same physician who is mentioned by Galen (de Meth. Med. 1.7. vol. x. p. 53) among several others as belonging to the sect of the Methodici.