(Βάθυλλος), a Pythagorean philosopher, to whom, together with Brontinus and Leon of Metapontum, Alcmaeon of Crotona [ALCMAEON] addressed his treatise on Natural Philosophy. (D. L. 8.83.)
[A.G]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890