It was a long time before anyone else invaded Devon. Saxons came to Devon in the 7th century, and the King of Wessex may have attacked in 614. There was a conflict between Devon and Wessex for 200 years. Some historians think that Wessex won the war by about 715 but others think this did not happen until at least 936. Eventually Wessex took control, but the Kings of Devon still had some power.