Tracking the history of my brothers 63 Riviera please help!!!!!!

My brother has worked over the last two years to restore a 1963 riviera, and its like his whole world. He works two jobs to afford the costly repairs and I would like to help him find the original owner of his car. I'm just a girl. And I don't know where to start but here's the info I have:

vin 7J1046910

original name plate : W. D. Chapin

dudes out there ..... Help a lady out ! Please

Might help to know where you are and where he bought the car. Color?