Complex sentence: She accompanied the brothers on their evangelistic journeys throughout Britain, until Charles ceased to travel in 1765 and they moved to Great Chesterfield Street (now Wheatley Street) in Marylebone, where they remained until Charles' death.
Split into simpler sentences: She accompanied the brothers on their evangelistic journeys throughout Britain, until Charles ceased to travel in 1765. They moved to Great Chesterfield Street (now Wheatley Street) in Marylebone, where they remained until Charles' death.