My question involves name change laws in the State of: NY / CA
I'm planning on petitioning to change my son's last name to match mine and my husband's. We live in NY and have lived here for 4 years. My custody case was originally filed in CA where my son was born and that's where the case still resides if I was trying to modify it. Am I supposed to file papers for a name change through California courts where the custody case resides or in New York where my son resides? His father still lives in CA.

