Albertus Magnus, a medieval scholar, philosopher, and theologian, is known for his encyclopedic works and contributions to the natural sciences and philosophy.
John Scotus Eriugena was an influential 9th-century Irish theologian, philosopher, and translator who played a pivotal role in the development of Western thought.
An Irish abbot and missionary, Saint Columba played a pivotal role in spreading Christianity throughout Scotland, establishing the famous abbey on Iona.