It will also have to be determined which is the correct mother, as the last name at birth is not the same. Was Lilian born Crow, or born Knight? If born Crow, where does the Knight come from? If Crow, but her father is Knight, was she born before the parents married, or is Knight a stepfather? If Knight, why does she have the last name of her mother and not the father?
All these need to have sources to back up whatever the claim is.