When my daughter was born, her father and I were on cordial terms, and I gave her his last name. However, since then he has proven himself to be...well unworthy of this and I would like to change it to, at the very least, a hyphenated last name of both of our surnames. He is not listed on the birth certificate since he never came in to sign it, however I gave his name as her father to child support. Since he never signed the birth certificate, could I change her name without him having to sign the papers?

