Yes, their names were Samuel Oscar Berry (Sr.) and Elizabeth (McGraw) Berry. This information is in Dr. Thomas F. Berry's book "Four Years With Morgan and Forrest," which can be accessed on Google booksearch. The book also has additional generations and details of their early lives, as well as Thomas's recounting of his many adventures and a defense of his brother and the southern cause. Findagrave.com has a less complimentary account of Samuel's Civil War history, but also includes a photo of him. Thomas's pictures are in his book too. If you have trouble locating any of these, please let me know and I can send you the links. How are you connected to Samuel and Thomas?
Rodney