Mrs Patom and I were on separate PNRs yesterday on DL 1404 ATL-DAY. I cleared at the gate. Mrs Patom(FO) was number 1 on the upgrade list at boarding. Despite my advice to wait she chose to board so technically she gave up the upgrade. As boarding was winding down the FA came to the seat I had previously been assigned; addressed the man sitting there with my last name and invited him to move to first. My assumption is that the GA told the FA to upgrade passenger Patom in seat xx E and he actually upgraded the passenger in seat xx D. Mrs P's flight history shows UV. Not a real big deal for a short one hour flight but hope it never happens on a long trip. Perhaps also Mrs P will learn to listen to FTers.