Convokes the council of Lyons, [ ii. 335].
Determines on the seventh crusade, [ ii. 338]..
Excommunicates Frederick, emperor of Germany, [ ii. 341].
Deposes him, [ ii. 353].
Protracted contests between them, [ ii. 354] et seq.
Levies excessive contributions on Europe, [ ii. 358].
Encourages the preaching of a fresh crusade, [ ii. 464].
His character, [ ii. 490], [ ii. 491].
Inquisition established in Spain, [iii. 267].
Its power, [iii. 271].