The legal issues of having two selves are interesting, but seperate from the moral ones. Legally, I dunno, it depends on the teleporter malfunction laws in my local area. Maybe the teleportation manufacturer becomes liable for duplicating my quality of life for one of us, like a weird technology third version of alimony/child support.

Morally/emotionally whatevet you wanna call it, both of me would be married, as everyone present (me, myself, and my wife) participated in the wedding ceremony. My wife's vows apply to the both of us, and each of us took vows to my wife. My child gets two dads, since we both fathered her, and she gets to deal with three parents.

I imagine we'd both just live together, and share ownership. In my jurisdiction (the real world, fairly local I'd say) there are no laws about this, and I suppose we'd share our SS number and identity, if for no other reason than neither of us wants to go to court to try to change it. I think I'd choose to switch my first and middle name, so we could differentiate, but still be us. It'd be neat.

These are legal and cultural questions with no objective answer outside that context, so its simply up to those involved to figure out what they prefer

Easy solution: put all those things through the teleporter/duplicator