An ancestral sister had a baby a few years before her marriage to her husband in the 1860s. Court records from the estate of the baby’s grandfather (the father of the sisters) make it clear that he and his wife raised the baby. The child grew to adulthood and have children of her own.
One researcher decided to change the child’s date of birth, the couple’s date of marriage, and the baby’s last name in order to make it appear to be the husband’s child.
Report what you find, but don’t change what you locate in order to present a different story from the reality.