I have recently learned of a Franciscan movement that existed for a short time after the death of St Francis, called the ‘Fraticelli’. The Fraticelli (Italian for “Little Brethren”) or ‘Spiritual Franciscans’ who desired to live more closely to the original ideal of poverty, as lived by St Francis (and dare I say St Clare too) but were repudiated by the institutional Church for their position. Sadly, some members were burned at the stake and others excommunicated and persecuted. The Fraticelli felt justified in conscience to reject the authority of popes and bishops claiming the gospel as their authority over the ideas of the papacy. They had a flavour about them akin to some of the early Church movements that scorned the materiel wealth and imperial power of the church and who came into similar conflicts with ecclesiastical power and control. I have come across a historical analysis of the history of the Fraticelli called ‘The Spiritual Franciscans: From Protest to Persecution in the Century After Saint Francis’ by David Burr: https://www.psupress.org/books/titles/0-271-02128-4.html