Eustachio, Bartolommeo, an Italian physician of the 16th century; settled at Rome, made several anatomical discoveries, among others those of the tube from the middle ear to the mouth, and a valve on the wall of the right auricle of the heart, both called Eustachian after him.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Eusebius Pamphili * Eustathius