Eugenius IV., Pope, born at Venice; his pontificate was marked by a schism created by proceedings in the Council of Basel towards the reform of the Church and the limitation of the papal authority, the issue of which was that he excommunicated the Council and the Council deposed him; he had an unhappy time of it, and in his old age regretted he had ever left his monastery to assume the papal crown.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Eugenius * Eugubine Tables