QUERY: CAIN/MENDENHALL of Fountain County

I am seeking information William B. (BRISTOW?) CAIN. He was the child of Jacob CAIN (b. OH C1811) and Jane Bristow MENDENHALL, the widow of Taliaferro MENDENHALL. Jacob and Jane were married 28 MAR 1836 in Fountain Co, IN. One record says that William B. was born in 1838 in Fulton Co, IN but I have no date. That does, however, accord with census records and his Civil War service records. I would like to verify his birth record and hope that it would lead to more information on his parents. Any assistance much appreciated. Del Cain 425 Indian Crest Dr. Saginaw, TX 76179 del.cain@sbcglobal.net