You can give your child any last name you like but I would think it through beforehand. It will be easier on the child to have the same name as the other kids. Once you make that decision it is not easy to undo.
My oldest had a different name, she HATED it.
My husband and many years split up this past November, I’m presently a mother of two and recently concieved a child from my lover. I am not yet divorced but was wondering can my unborn child have my lovers last name? or does the child take my husbands last name?