"Education and time do NOT make a difference if any history of the family has been taught."

Education can make a difference, if the person chooses to set aside their subjectivity as best they can.

By the way, my g-g-g-grandfather John C. Murray was in the 8th Arkansas Infantry. He died in 1862, supposedly from wounds received at Shiloh (the regimental records leave little clue to his exact time or manner of death).