Moultrie Co lists a John Bland of the Civil War buried in Wright Cemetery, no other info. (From Roll of Honor - Record of Burial Places of Soldiers, Sailors, Marines and Army Nurses of All Wars of the United States Buried in the State of Illinois, Vol. II Moultrie Co., IL, 1929)
This might be him:
BLAND, JOHN A PVTH18 IL US INF REORG LIVINGSTON
He is not in the 1850 Clark County census - moved around a lot, didn't they!