Complex sentence: In 1122, Henry and probably Matilda were at the Council of Worms, which settled the long-running dispute with the Church by Henry giving up his rights to invest bishops with their episcopal regalia.
Split into simpler sentences: In 1122, Henry and probably Matilda were at the Council of Worms. The council settled the long-running dispute with the Church by Henry giving up his rights to invest bishops with their episcopal regalia.