Plenty are out there already - with lasts names of Cohen, Levi, Levin etc, and due to recent research & discovery, most of them can be genetically validated. Turns out Levites have an extremely rare genetic marker. Pretty cool stuff.
http://www.cohen-levi.org/jewish_genes_and_genealogy/the_dna_chain_of_tradition.htm
http://www.aish.com/societywork/sciencenature/The_Cohanim_-_DNA_Connection.asp