Dan, could your John Terhune have lived some time in N.J.My son's Terhune line, which I am researching, has his gggrandmother Hannah Matilda Terhune, born 1836, Saddle River, N.J. died 1914, NYC.Her father was John Albert Terhune, b. 1804, his father was Albert John Terhune, b. 1781, his father was John Terhune, b. 1758, and so on back to a Johannes Terhunne born prior to 1600 in Holland.I looked through Ancestry.Com and found 2 Am. Civil War Soldiers from Indiana (of course aft. 1850), several marriage records from Johnson Co., Indiana, none prior to 1850, perhaps a son.Good luck, let me know if I can help.