Complex sentence: Louis VIII the Lion (5 September 1187--8 November 1226) was a Capetian King of France who reigned from 1223 to 1226, he was also disputed King of England from 1216 to 1217.
Split into simpler sentences: Louis VIII the Lion (5 September 1187--8 November 1226) was a Capetian King of France who reigned from 1223 to 1226. He was also disputed King of England from 1216 to 1217.