My question involves name change laws in the State of: Delaware
My ex-fiance had nothing to do with my 4 month old daughter until paternity was established. At the hospital I named her with my last name being that he denied her of being her father and he asked for a paternity test. After he found that he was the eleged father, we went to court and I found out that he wanted to change her last name to his last name and i didnt agree to that. The judge stated that it would be better for my daughter to have the fathers last name because one day i would get married and "change" my last name. So we have to go to court in a couple of weeks to determine her last name. I have to present my case why I think she should have my last name instead of him being that shes living with me I think that it would be in her best interests to have mine. The judge aslo said that if we do not agree with a name that she will name her for us.
How can the judge possibly do this when i have already gotten her social security card, medicaid card and after the hospital her last name was what it is now? Also I don't understand how the father has any rights to my daughter being that he denied her, i've been caring for her he has not given any support whatsoever, and being that a lot of her information is already into the government system as the same last name as myself.
If there is a way that they are able to do this i would like some good advice of what are some good reasons my daughter should have my last name.
I know i don't have to change my lasy name when i get married but i need a little more in depth reasons so i can present a strong case to the judge.

