Hi majm, JM, chuter and Stuart,
the nearest electoral office I can check historic rolls is 3 hours away, not an option at the moment. I do have full membership to A. but they only have 1930 or later for NSW. There are 2 or 3 couples with these names, hence the need for occupations. One of the couples possibly his son, also John/Jack. John is also Jack but there is another Jack too.
Rang the church and the Priest gave me a bit more information that isn't on the marriage certificate.
I have the death registrations from both Narrabri and Wee Waa Court Houses up to 1975 and they are not helping very much, parents names are given when provided by the informant. John's mother is also nee Smith. I have no modem at the moment and the dongle for my laptop is a tad expensive so research on the back burner till the replacement arrives.
Thank you very much everyone for your input, will revisit when back on the modem.
Cheers
Freckle