Irish Baptisms: Get the child's surname from the father.

BruceLaidlaw

The instructions say:

• When indexing Ireland baptism and marriage records, if the principal's or spouse's surname was recorded and the parents' surnames were not, determine the parents' surnames from the principal's or spouse's surname. If the father’s surname is not recorded and the mother’s surname was, determine the father’s surname from the principal’s surname and index the mother’s surname as recorded. This is an exception from the General Indexing Guidelines and should not be applied to other projects.

I've understood this to include "If the child's surname is not recorded, then determine the child's surname from the father's surname."

However, some of the indexing that I'm reviewing shows "Blank" for the child's surname. I've been "correcting" this by pasting in the surname from the father.

Am I correct?