No, you are not going to be able to do a "back door adoption" and change your son's name to your boyfriends name.

After you get married, you can look into adoption but you haven't said much about the father of the daughter. Is he paying child support? Is he even ordered to pay child support? Has the father had any contact with the child at all and if so, when is the last time?


If the father has abandoned the child, it may be possible to apply to have his rights terminated and your then husband to adopt the child but the information is a bit lacking to go to that point already.