Catherine went home by land and stayed for a month in Genoa with Madonna Orietta Scotti, a noble lady of that city, at whose house Gregory had a long colloquy with her, which encouraged him to push on to Rome.
At the colloquy of Marburg "Zwingli offered his hand to Luther with the entreaty that they be at least Christian brethren, but Luther refused it and declared that the Swiss were of another spirit.
His conspicuous ability was shown in the abortive Colloquy of Poissy (1561).
In the cave the saint held his famous colloquy with the devil, in which Satan was worsted and contemptuously dismissed.
Theodore Beza from Geneva and Peter Martyr Vermigli from Zurich appeared at the colloquy; the German theologians to whom invitations had been despatched only arrived in Paris after the discussion was broken off.