The Frogtown cemetery is also called the African American Methodist Church Cemetery.  Perhaps it was also called the Curtis Cemetery at times.

To reach this cemetery, take the Old State Road to where the road arcs at the top. It is a couple of blocks to the south of State Road, up the farm lane. The cemetery starts about a block back into the woods, there is no electric fence if you enter the area from the side at this point, but watch the barbed wire if you enter at the "gulley". It's about an acre in size and the stones are dotted throughout. The area is overgrown and there could be more stones that were hiding in the weeds/lillies. 
Name Born Died Comments Tombstone
AKERS, Clara -- 27 Mar 1880 Wife of John C. Aged 17 Yr 2 Mo 27 Da tombstone photo link
ARMSTEAD, Otto   28 Oct 1882 Death certificate # 1269. 17Y 7M 0D. Poker Armstead, brother.
COURTNEY, Lillian -- -- Aged 16 Days
COURTNEY, Martha E. 1867 1902 Wife of James F.
CURTIS, Levi P. 31 May 1892 11 Oct 1911 Aged 19 Yr 5 Mo 11 Da
GORDY, Mary   16 Oct 1881 Death certificate # 1011. 61Y.
GRIGSBY, Joseph Feb 1849 13 Jul 1908  
KILLIAN, George W. -- 25 Dec 1876 Son of A. & A. Aged 16 Yr & 28 Da. Footstone C W K. tombstone photo link
KILLIAN, Mary Annie Eliza 3 Dec 1863 2 Nov 1881 Dau of Dr. A. & Amanda. Born in Decatur, Macon Co., (?) IL tombstone photo link
KINNEY, Louisa -- 12 Aug 1891 Dau of A. & F. 16 Yr 8 Mo 6 Da. Footstone A C.
MORRESON, Birty -- -- Our Darling Baby tombstone photo link
MORRESON, Margaret -- 24 Aug 1898 In Her 57th Year. Footstone M M. tombstone photo link
MORRISON, Lorenzo D. 21 Mar 1839 26 Aug 1911 Father. Footstone L D M. tombstone photo link
PENDERGRASS, George Noah -- 19 Sep 1867 Aged 3 Yrs 12 Da
PENDERGRASS, Samuel, Jr. 9 Sep 1870 21 Nov 1908 Tis sad to part with Papa. tombstone photo link
PLEASANT, George E. -- 20 Sep 1874 Son of W. G. & Lee. Aged 5 Yrs. tombstone photo link
TETORS, Catherine 1823 1855 Mother. At Rest.
ZINSCHLAG, Katie   15 Dec 1885 Death certificate # 2049. 3Y