<class name="Contact.Person,Contact" table="person">
    <id name="Key" column="pid" type="Guid">
        <generator class="guid"/>
    </id>
    <property name="birthday" type="DateTime"/>
    <component name="Name" class="Contact.Name,Contact">
        <parent name="namedPerson"/> <!-- reference back to the Person -->
       
        <property name="initial"/>
        <property name="first"/>
        <property name="last"/>
       
        <component name="Translation" class="Contact.Name,Contact">
            <parent name="name"/> <!-- reference back to the Person or Name? -->
         
            <property name="initial"/>
            <property name="first"/>
            <property name="last"/>
        </component>
    </component>
</class>