The judge may consider it, but I doubt he would remove the father's last name. He might allow you to change your daughter's last name to your spouses. But I think an easier way would be to contact the biological father and see if he might consent to a stepparent adoption. How old is your child, will it even matter to her at this point, there are so many blended families now.
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How is her name your name-maiden or otherwise? Her name is her name. Your name is your name. I don't think any judge will change your child's same because you are getting married. if a step parent parent adoption comes along try that.
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