Sorry, I am sure it has been asked before. But I was not able to find it quickly...

Is it possible to make a reservation for a spouse using my Marriott account? I am lowly Silver so I don't expect a lot of bonus points, but I do have my Marriott Visa and she doesn't. And I am too lazy to open a whole new Marriott account for her just for one stay...

So, is it possible/allowed? (One possible complication -- my SO has a different last name.)