Lovely clear writing in the marriage register, or the copy that was photographed. And the first child was baptised four days after his parents’ wedding, born in the vestry, as my father would say.
That still does not tell us whether the father was an 18-year-old, as he would be if he was John three, or aged 40, as he would be if he was John two. Your argument from this pairing of marriage and baptism presumably is that only an 18-year-old would do such a dastardly thing to a young woman and leave it so late to make an honest woman of her, something that a man of 40 would never do.