Dear E.W. Wallace, I took a look in the Nassua-Seigen book by B.C. Holtzclaw, I own to which sadly to tell you there is nothing in there on your Reuben. Also to let you know, you also need to keep a look out for Camper/Kamper for Kemper as they are interchangeable depending on who was writing. You also need to go to Culpeper Co., Va website as there might be more Kempers there as this is county where they are located in. I hope this helps you. Good luck hunting! Regards, Rebecca Bashaw