I'm not related, but did some digging Indiana marriages: Benjamin Hunter married Julia Ann Sharpe/Sharp on 11 May 1847 in Miami Co. IN There are multiple references to this marriage in various indiana marriage databases and they all refer to her as Julia Ann Sharpe.
I believe she is the dau of Jacob Sharp b. @ 1804 in PA and Sarah (UNK) b. @ 1807 PA
1850 Butler, Miami Co. IN Sharp, Jacob 46 PA Farmer Sarah 43 PA William 15 OH Sarah 12 OH David 9 OH Mary 7 OH Benjamin 3 IN
1870 Peru, MIami IN Sharp, Jacob 64 PA Sarah 62 PA James N. 20 IN Jacob 16 IN
1880 Peru Miami IN Sharp, Joel 27 IN PA __ laborer Sarah 30, wife IN IN IN Effie 5 IN IN IN William H. 1 IN IN IN Jacob 74, grandfather PA PA PA Sarah 72, grandmother PA PA PA
(Joel was the son of Henry Sharp b. @ 1828 PA and Sarah UNK b. @ 1830 OH)
There were several older children who were born in PA before Jacob went to Ohio.They evidently got to Indiana sometime after 1843 and before 1847. Jacob died in 1880 and Sarah died in 1888.They are buried at Peru Mt. Hope Cem. Original section, Block 9, Lot 18 graves 5 & 6.They may not be marked graves.
1850 Washington Twp, Miami IN Hunter, B. F. 27 PA Farmer Julia 20 PA Elizabeth 55 PA (Probably his mother) Elizabeth 1 IN Parks, Robert 12 IN
1860 Butler, Miami, IN Hunter, Benjamin 39 PA Farmer Julia A. 30 PA Elizabeth A. 11 IN Sarah F. 9 IN Mary Ellen 7 IN Samuel G. 5 IN Benjamin F. 3 IN Elmira B. 9/12
1870 Butler, Miami, IN Hunter, Benjamin 54PA farmer Julia A. 46 PA Sarah F. 19 IN Mary E. 17 IN Samuel S. 15 IN Benjamin F. 12 IN Elmira 10 IN James 8 IN William H. 6 IN Julia A. 3 IN Robert G. 9/12
1880 Butler, Miami, IN Hunter, Benjamin F. 64 PA PA PA Farmer Julia A. 50 PA PA PA Samuel G. 25 IN PA PA carpenter apprentice Benjamin F. 22 IN PA PA works on farm James N. 18 IN PA PA works on farm Julia A 13 IN PA PA Robert M. 10 IN PA PA Charles J. 7 IN PA PA
1900 Butler, MIami, IN Hunter, Benjamin 84 b. Apr 1816 married 53 years Julia A. 70 b. Mar 1830 mother of 12, 9 living Robert M. 30 b. Aug 1869 Charles J. 28 b. Mar 1872
Marriages - all Miami Co, IN Benjamin F. Hunter Jr. Married Mollie Boyer 5 Mar 1882 Charles J. Hunter married E. Doolittle 7 Mar 1901 Samuel G. Hunter married Claudie Nolan/Noland 17 Jan 1892 Sarah Hunter married Franklin Means 24 Aug 1873 Mary Ellen Hunter married Miles Monroe York 28 Oct 1872
Lots of the kids stayed in the Miami Co area through their deaths in the 1920s and 30s.
The Miami Co. IN Genweb site has lots of marriage, cemetery, death, etc. info.You may be able to do a bunch of tracing forward using their site.
Several other people have family trees saying that Benjamin Hunter was born in Franklin, Pennsylvania and was the son of Alfred Hunter 1797 (NC)-1840 and Elizabeth Long 1795(PA)-??None of them have any reliable sources for their information, so I would treat this as a lead, not a fact.