Complex sentence: Holy Island has a recorded history from the 6th century AD; it was an important centre of Celtic Christianity under Saints Aidan of Lindisfarne, Cuthbert, Eadfrith of Lindisfarne and Eadberht of Lindisfarne.
Split into simpler sentences: Holy Island has a recorded history from the 6th century AD. It was an important centre of Celtic Christianity under Saints Aidan of Lindisfarne, Cuthbert, Eadfrith of Lindisfarne and Eadberht of Lindisfarne.