My female Nord is married to Argis... which I regretted as soon as I realized he would always call her Thane. It doesn't even feel like she's married. So I took him to a dragon lair, had him fight an ancient dragon alone and once he was dead I killed it and fast travelled to Riften. I waited days in hope that the courier would show up with a letter of inheritance so I could get her a new partner, but... the courier just didn't come.