Complex sentence: Despite being in Wales the name Gresford is not Welsh, but Saxon in origin settled by the Angles of Mercia in the 7th and 8th centuries.The had been battles between the descendants of the Deceangli and incoming Mercians in 613, so this seems a likely dateline.
Split into simpler sentences: Despite being in Wales the name Gresford is not Welsh, but Saxon in origin settled by the Angles of Mercia in the 7th and 8th centuries. There had been battles between the descendants of the Deceangli and incoming Mercians in 613, so this seems a likely dateline.