Galen, or Claudius Galenus, a famous Greek physician, born at Pergamus, in Illyria, where, after studying in various cities, he settled in 158; subsequently he went to Rome, and eventually became physician to the emperors M. Aurelius, L. Verus, and Severus; of his voluminous writings 83 treatises are still extant, and these treat on a varied array of subjects, philosophical as well as professional; for centuries after his death his works were accepted as authoritative in the matter of medicine (131‒201).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gale, Thomas * Gale`rius, Valerius Maximus