A website 'Bogstown.com' might help some viewers. There's a list of associated families which I found useful. The Livingstone's took the name Boggs, but it was an insiders joke because the land of Swantallow that became 'Elagh' was high ground, very fertile, highly desirable for commanding views of the countryside. Fascinating stuff with the Battle of Elagh featuring. Others may wish to comment on its veracity