Question for Ogun State Liason Office

My name is Copperfield William oluwaseyi and I claim to be from ijebu ode which my mother's local government. My fathers name is Copperfield David oluwaseyi and he is from Abeokuta north. He already has the certificate of origin but I wasn't issued mine because the officials are saying Copperfield is not a Yoruba name. What can I do? please help