Averroes was a philosopher under which philosophical movements  such as Aristotelianism and the 13th-century philosophical movement  came into play in what other religions beside Islam?
Averroes Ibn Rushd (Arabic: ‎ ‎ ; 14 April 1126 – 10 December 1198), full name (Arabic: أبو الوليد محمد ابن احمد ابن رشد‎ , "ʾAbū l-Walīd Muḥammad Ibn ʾAḥmad Ibn Rushd " ‎ ), often Latinized as Averroes ( ), was a medieval Andalusian polymath. He wrote on logic, Aristotelian and Islamic philosophy, theology, the Maliki school of Islamic jurisprudence, psychology, political and Andalusian classical music theory, geography, mathematics, and the mediæval sciences of medicine, astronomy, physics, and celestial mechanics. Ibn Rushd was born in Córdoba, Al Andalus (present-day Spain), and died at Marrakesh in present-day Morocco. His body was interred in his family tomb at Córdoba. The 13th-century philosophical movement in Latin Christian and Jewish tradition based on Ibn Rushd's work is called Averroism.
Catharism Catharism ( ; from the Greek: καθαροί , "katharoi", "the pure [ones]") was a Christian dualist or Gnostic revival movement that thrived in some areas of Southern Europe, particularly northern Italy and southern France, between the 12th and 14th centuries. The followers were known as Cathars and are now mainly remembered for a prolonged period of persecution by the Catholic Church which did not recognise their belief as truly Christian. It appeared in Europe in the Languedoc region of France in the 11th century and this is when the name first appears. The adherents were also sometimes known as Albigensians after the city Albi in southern France where the movement first took hold. The beliefs are believed to have been brought from Persia or the Byzantine Empire.