I'm getting off point here and this may seem silly to some but it makes me feel a little better. My 2nd great-uncle was Lt. Washington Lafayette Roberts of the 7th Mississippi. He died in September of 1862 in Kentucky and his gravesite is not known to us. But in my humble little set of genealogy notes I don't have his grave marked "Unknown". Instead I just listed it as, and refer to it as, "Known only to God". He never forgets :-)