JAXB Unmarshalling - is it possible to limit occurance of an element without using schema validation?

I'm new to JAXB and have inherited a project which uses it to marshall/unmarshall xml - there is custom validation already written using various JAXB annotations - currently no schema is used.
I need to add some validation when unmarshalling to check that a given element only occurs once - from searching around this looks like it is usually achieved using "maxOccurs=1" within an xsd - so my question is can this be achieved using any JAXB validation annotation?
For example(shortened version for simplicity) - currently the last value, 'NameThree', gets unmarshalled but I want a validation error when more than 1 name element exists.

@XmlAccessorType(XmlAccessType.FIELD)
public class Person {

@XmlElement(name="NAME", required = true)
    protected String name;
}

And xml file:

<Person>
 <Name>NameOne</Name>
 <Name>NameTwo</Name> 
 <Name>NameThree</Name> 
</Person>

Thanks for any pointers.

Edit - for clarity, the element is not the root element. There are other elements(above is for illustration only)