hello MoparMiningLLC, i'd love to help you out with this and let you know who most likely still owns those cards with the serial number #10...
as for the free raffle card, i'd advise you to take your wife out to dinner and buy her a bouquet of flowers... maybe she'll soften up and give you
her #10 
unfortunately, i can’t find any more information about the Unijoin card, and one of
these users most likely has the Mixtum card #10
and last but not least, the nashville card was personally handed out by polymerbit at the conference back then