I have found the names Caplinger and Keplinger used interchangeably by the families who migrated from Rockingham Co., VA to Hardy Co., VA (now WV). I have a William Keplinger born 13 May 1843 in Hardy Co. and died 7 September 1861 presumably in Hardy Co., buried at Mt. Hebron EUB (now UM) Cemetery at Ridges, Grant Co. (then Hardy), WV. His parents were Christian Caplinger and Catherine Lantz who had married in Rockingham Co. and migrated to Hardy Co. in 1830. I have more information on this family.