COUNCIL, in Church History, an assembly of prelates, convened for the purpose of regulating affairs relative to the doctrine and discipline of the church. The exact number of these it is impossible to ascertain. Sir Harris Nicolas estimates them at 1604. The title of Occumencial or general, is given to those which are regarded as representing the universal church. Of these the adherents of the Church of Rome generally acknowledge eighteen as regular and infallible, but differ materially among themselves in regard to the individual councils which are to be included in the list. The Italians, and immediate dependents of the Pope, accept three, viz., those of Lyons, Florence, and the fifth Lateran, which the French deny, and replace by the Councils of Pisa, Constance, and Basle. These rival councils swell the list to twenty-one, which convened as follows:—
| Place. | Business. | Date. |
|---|---|---|
| 1. Nice (1.), | Heresy of Arius, | 325 |
| 2. Constantinople (1.), | Do. Apollinaris, | 381 |
| 3. Ephesus, | Do. Nestorius, | 431 |
| 4. Chalcedon, | Do. Eutyches and Dioscorus, | 451 |
| 5. Constantinople (2.), | Do. Origen and Theodoret, | 553 |
| 6. Constantinople (3.), | Do. Monothelites, | 680-1 |
| 7. Nice (2.), | Regulation of image worship, | 787 |
| 8. Constantinople (4.), | Heresy of Photius, | 869 |
| 9. Lateran (1.), | Right of investiture, | 1123 |
| 10. Lateran (2.), | Temporalities of ecclesiastics, | 1139 |
| 11. Lateran (3.), | The decrees of the antipopes, and suppression of the Vaudois, | 1179 |
| 12. Lateran (4.), | Albigensies and Crusades, | 1215 |
| 13. Lyons (1.), | Excommunication of Frederick II., | 1245 |
| 14. Lyons (2.), | Procession of the Holy Spirit, | 1274 |
| 15. Vienna, | Suppression of Knights Templars, | 1311 |
| 16. Pisa, | Deposition of Benedict XIII., | 1409 |
| 17. Constance, | Condemnation of Wycliffe, Huss, and Jerome, | 1414 |
| 18. Basle, | Reformation of the Clergy, | 1431 |
| 19. Florence, | Schism of the Greeks and Latins, | 1439 |
| 20. Lateran (5.), | Pragmatic sanction; Turkish war, | 1512 |
| 21. Trent, | Condemnation of the Reformers, | 1545 |