Brethren of the Common Life
Jan van Ruusbroec submitted his Groenendael Priory to their Rule in 1335, from which stemmed the Brethren of the Common Life and Thomas à Kempis' Devotio Moderna. A major theme of their studies was the anagogical relationship between the Divine and the Mundane, adopted by Pope Eugene IV in his 5.1.1435 bull declaring Roman supremacy.