As Lordna has said, I don't think the name change is recognised in the Phils unless you adopt,
Also Andy, as Lordna has posted, it might surprise you that you don't have 'parental responsibility', thou you could go thru the courts to get this. I'm sure you don't need to adopt Lordna, in order to get parental responsibility.
http://www.gingerbread.org.uk/factsh...esponsibility-