Complex sentence: Pope Felix I, pope (January 5,269-December 30,274), a Roman by birth, succeeded Dionysius after his death on December 26 268 as Pope, being elected in January 269.
Split into simpler sentences: Pope Felix I, was pope from (January 5,269-December 30,274). A Roman by birth, succeeded Dionysius after his death on December 26 268 as Pope, being elected in January 269.