Council of Basel

 SESSION 1 14 December 1431

 SESSION 2 15 February 1432

 SESSION 3 29 April 1432

 SESSION 4 20 June 1432

 SESSION 5 9 August 1432

 SESSION 6 6 September 1432

 SESSION 7 6 November 1432 [Interval for a papal election]

 SESSION 8 18 December 1432

 SESSION 9 22 January 1433

 SESSION 10 19 February 1433

 SESSION 11 27 April 1433

 SESSION 12 13 July 1433

 SESSION 13 11 September 1433

 SESSION 14 7 November 1433

 SESSION 15 26 November 1433

 SESSION 16 5 February 1434

 SESSION 17 26 April 1434

 SESSION 1 8 26 June 1434

 SESSION 19 7 September 1434

 SESSION 20 22 January 1435

 SESSION 21 9 June 1435

 SESSION 22 15 October 1435

 SESSION 23 26 March 1436

 SESSION 24 14 April 1436

 SESSION 25 7 May 1437

 SESSION 1 8 January 1438

 SESSION 2 10 January 1438 [On the legitimate continuation of the council of Ferrara, against the assembly at Basel]

 SESSION 31 15 February 1438

 SESSION 42 9 April 1438

 SESSION 5' 10 January 1439

 SESSION 6 6 July 1439

 SESSION 7 4 September 1439

 SESSION 8 22 November 1439 [Bull of union with the Armenians]

 SESSION 9 23 March 1440

 SESSION 10 27 May 1440

 SESSION 11 4 February 1442

 SESSION 12 14 October 1443

 SESSION 13 30 November 1444

 SESSION 14 7 August 1445

SESSION 5' 10 January 1439

[Decree translating the council of Ferrara to Florence]

Eugenius, bishop, servant of the servants of God, for an everlasting record. It is fitting that the site of an ecumenical council, in which men chosen from the whole christian world meet together, should be such that in it, among other human necessities, there should be the most important of all, namely healthy air. Otherwise, because of the pest-laden contagion of infected air which all people naturally fear and flee, those present at the council may be forced to depart with nothing accomplished and the absent will refuse to attend. Assuredly it is right that those who come together at synods to treat of difficult questions should be free from every anxiety and fear, so that they may be able in greater peace and freedom to give their attention to the matters of public concern.

We would, indeed, have preferred that the universal council which we initiated in this city should continue here, and that the union of the eastern and western churches should be brought to its happy and desired conclusion in this city, where we initiated it. When the plague afflicted this city last autumn, pressure was exerted by some for the transferral of the synod to a non-infected locality. Nothing was done, however, because it was hoped that the plague would cease with the advent of winter, as it usually does.

Since in fact the plague continues from day to day and it is feared that it will gain strength when spring and summer come, all judge and advise that a move must be made without delay to some non-infected place. For this and several other good reasons, with the agreement of our dear son John Palaeologus, emperor of the Romans, and of our venerable brother Joseph, patriarch of Constantinople, and with the approval of the council:

In the name of the Trinity, Father, Son and holy Spirit, with the full securities and safe-conducts which we gave to all at the beginning of the sacred council, we transfer and declare to be transferred as from now this ecumenical or universal synod from this city of Ferrara to the city of Florence, which is manifestly free for all, safe, peaceful and tranquil, and enjoying healthy air, and which, situated as it is between the Tyrrhenian and Adriatic seas, is excellently situated for easy access for both easterners and westerners. Let nobody therefore . .. If anyone however . . .