Originally Posted by netdragon
Not really sure. The general area of the I-75/I-285 intersection has been called Cumberland for about 30 years, well before I came here.
I think the area around Cumberland Mall gradually became known as "Cumberland" in reference to the mall, much as it is sometimes called "Cumberland/Galleria" in reference to both shopping areas. Cumberland Mall opened in 1973, so that would fit the 30 year (or so) timetable.
"Cumberland" may be a reference to the Cumberland Mountains - part of the Southern Appalachians...or possibly the Cumberland River, both in nearby Tennessee. These were named for the Duke of Cumberland in the 1700s, and there may be areas in North Georgia named for him as well.