Tombstones in Riley Cemetery

This Tombstone reads: Children of Wm. & M.E. Riley
(I found no other evidence of graves of children of this couple, but that does not preclude their existence.)
This is my Great-great-grandfather, we are only aware of two children of this couple,
My Grandmother Winifred Mae Riley Banks Austill (or Mae Winifred) & William, (Jr).
She is buried in Sikeston, Missouri, her brother is believed to have been buried near Chicago, (actual site unknown).
Any others buried here would likely have been some that died very young.

William T. Riley is a son of Owen & Agnes Riley, his wife's name was Mary E.