Originally Posted by
pitflyer
Apologies if this has been covered,
No and No.
Although it has been anecdotally noted that if your wife were to convert her SPG points to a Marriott account in her name, and then transfer them over to your Marriott account (presumably subject to a fee unless she is a Gold or Platinum elite), then her Marriott point lifetime counter would go down on the transfer and your Marriott point lifetime counter would go up.
I believe there are limits as to the amount of points that can be transferred between Marriott accounts (unless there's a pending award) --- you might wish to confirm.