Any reference in this Act to the status or description of the father or mother of a person at the time of that person’s birth shall, in relation to a person born after the death of his father or mother, be construed as a reference to the status or description of the parent in question at the time of that parent’s death; and where that death occurred before, and the birth occurs after, commencement, the status or description which would have been applicable to the father or mother had he or she died after commencement shall be deemed to be the status or description applicable to him or her at the time of his or her death.