Our youngest child has been raised from birth in a three parent dynamic. Her bio-father she calls by his given name, she calls my husbandand I mom and dad.
We choose to have her, she wasn't an accident, she was planned. Her name actually references a triad.
She just doesn't happen to be my only or first child.
Yes, children can be taken away in some states, because of asinine laws pertaining to what is or isn't legal regarding marriage and living situations.