The cause for canonization began under Pope Pius VI on 27 June 1781 but suffered setbacks due to the French Revolution and the ensuing Napoleonic Wars and Revolutions of 1848.
The process of elevating someone to sainthood began in 1781 under Pope Pius VI, but it was hindered by the social and political upheaval caused by the French Revolution and the subsequent wars and revolutions, including those of 1848.