Are we living in a new pornocracy? The first one spanned six decades of the 10th century, during which there were 12 popes. Their elections were much influenced by Theodora, wife of the powerful consul Theophylact, and her daughter Marozia.

The idea of loose women running the papacy so excited Edward Gibbon that in The Decline and Fall, he claimed ‘the bastard son, two grandsons, two great grandsons, and one great great grandson of Marozia – a rare genealogy – were seated in the Chair of St Peter.’