Eugene IV

Citizen of the Republic of Venice. Nephew of Gregory XII. Canon Regular of San Giorgio in Alga.

Crowned Emperor Sigismund at Rome in 1433. Issued the papal bull Creator Omnium (1434), rescinding any recognition of Portugal's right to conquer the still-pagan Canary Islands and excommunicating anyone who enslaved the newly-converted Christians, the penalty to stand until the captives were restored to their freedom and possessions. Transferred the Council of Basel to Ferrara (1438); it was eventually transferred again to Florence (1439–1445) to avoid the bubonic plague.