Unknown name of mother
Not sure of the "proper" way to handle this situation: I know the father's name but not the mother's. As far as I know, they were married, but I have no source to verify that. The only thing I know about the mother is where she was born (from multiple census records of the child). Would it be advisable (or inadvisable?) to enter an unknown name placeholder ("?" or "Unknown" or "Mrs....") in order to enter the mother's birthplace? Any opinions or guidance is welcomed. Thanks.