There are five Lac Tran's listed in Michigan on Spokeo:
http://www.spokeo.com/search?q=Lac+Tran&swp5=t30#Michigan
The reason I looked up Michigan is that the Namus files states that the case is being handled by Sparrow Hospital Forensic Pathology. This organization is based in Michigan.
There are relatives listed but I don't have a subscription. Two of these have ages attached to them (male in late 50's). One has a family tree attached.