Hi Paul,
Thanks for your update.
We cannot bind the XML directly to the Silverlight Datagrid. But you can achieve your requirement by converting the XML Elements to the List. We have prepared the sample based on your requirement and please find the sample in the below location.
Sample:
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=SL_Grid_XML1002115001.zip Please let us know if you have any queries.
Thanks,
Rajasekar