That of several ill-attested writers (a Pyrrhonist sceptic mentioned by Diogenes Laertius 9.88; a medical writer cited by Galen); but best-known for being the cognomen of Marcus Vipsanius Agrippa (c.64-12), through whose closeness to Octavian/Augustus the name entered two dynastic families - the Julio-Claudians in Rome and the Herods in Judaea.