Wake snakes and come to Taw

This is the first line of a funny little ditty my Grandmother would recite. Her ancestors came to Georgia from England. I know there is a Taw River in Devon. I don't see one in Georgia. Is this line a part of something else- a poem, song, etc.? I do not bother to give the rest of the ditty as it has nothing to do with this one line. Thanks.

It might have a Biblical origin. The Tau (Taw) cross and serpents feature in some of the Books of the Bible. The rest of the ditty might give us a clue.