The Draytons lived on that area of Mt. Pleasent in Charleston known as "The Point", this area part of the "Burnt District". Ironically, it was in part due to Percival's efforts that the area received that name. I do not know where the father's law practice was, perhaps on Lawyer's row on Meeting Street. Though the father and Percival were adament in their Unionism, two of Percival's brothers were not. They are buried in Magnolia Cemetery, Mt. Pleasent.
I don't know of their lives apon moving to Philadephia. Regards.