Wrong family member

Christina Marie Fifield

I accidentally added a member to my father's side of the family that is not related to me. Same name, wrong member. How do I take them off my tree??

Julia Szent-Györgyi

Edit (remove) the relationship by clicking the little pencil-and-box icon to the right of the person's name.

CookeWilliamB1

The above is correct. If you know the ID of the correct person you can do a remove or replace with that correct ID.