I am an unmarried father living in CA. I would like to relinquish my parental rights and petition the court to have my child's last name changed to her mother's last name. I have had a close relationship with my daughter in the past, but we recently had a serious argument and the relationship is no longer repairable. Is it possible to relinquish parental rights and would that end a child support obligation? Can I petition the court to change my daugther's name against her objection?