Head in the noun phrase (personal name)

[Sydelle]

I couldn't find anything that would explain my dilemma - which ''part'' of a name is the head in a noun phrase? For example:
My friend, Jenny Smith, who likes flowers, is doing sth ...

I figured Jenny Smith must be the head of the whole nominal phrase (My ... flowers), but is the head actually Jenny or Smith?

 

[José Manuel Rosón Bravo]

Sorry Sydelle, but I think that it is "Jenny Smith" as a whole.

Regards,

José Manuel Rosón Bravo