@ausindian423,
Marrying this woman who you do not know and do not love is exceptionally unfair to both of you. At the absolute minimum, call off the wedding as a gesture of decency to her. She's innocent in all of this. You won't regret being kind to her.
As for your parents, you need to let them know that any woman they choose will not work out for you, and you need to tell them why. You're almost 40 years old and you are entitled to speak up for yourself and to live the life which makes you happiest.
But first call off the wedding. If your parents are self-aware at all, they'll at least figure out there's something going on. And you'll have set this woman free, which is 100% the right thing to do.