My son is 2 years old. when he was 2 months old his dad left us to never see him again.

He never called or came around. which is great.
I moved out of town and I finally came back for good. His family does not call me to ask about the baby or any thing on holidays or birthdays. which is ok cause I don’t want them around. (I just want to say that to show you that they don’t come around.)

Ok so I moved back right, I am going on 3 years with my fiance we want to get married and doing the family thing.

I want to know if I can go to court and say that his bi-logical father can never come and be like “Hi, I am your dad”, nOt the one that raised you for all this years.

I have talked to him he said that he will not come into our lives for the sake of not confusing the boy with having 2 dads.

But I just want something on paper that says he is legally mine and only mine.

oh yeah he ws in jail for beating up his niece and he cannot be around 16 and younger children, he has no job, no car, no education, no place to live and is a recovering alcoholic and drug user.

What can I do to insure that we will not come around and want to see him or try to get shared custody?

also how can I change his last name to mine?