Geneva was John Calvin's adopted home and the centre of the Calvinist movement. In Geneva, Hugues, though Catholic, was a leader of the "Confederate Party", so called because it favoured independence from the Duke of Savoy. It sought an alliance between the city-state of Geneva and the Swiss Confederation. The label "Huguenot" was purportedly first applied in France to those conspirators (all of them aristocratic members of the Reformed Church) who were involved in the Amboise plot of 1560: a foiled attempt to wrest power in France from the influential and zealously Catholic House of Guise. This action would have fostered relations with the Swiss.