What I find troubling about this document is the part where it says: Number of Previous Issue - Living/Deceased, and, as far as I can tell, it is filled in "all" to both (Living and Deceased, that is). Since "issue" means the other children of these parents, I would have expected it to say "0" in both places. The fact that it says "all" makes no sense ("all" of the other children of these parents are Living AND "all" of the other children of these parents are Deceased).
Makes me think whoever filled this form in doesn't know what the word "issue" means in the context it is used here.