Certain famous individuals in ancient and recent history have been DNA tested to determine their haplogroups. These include U.S. President Thomas Jefferson, the Wright brothers (aviation pioneers), and the Romanov family. Historical evidence pointing to Genghis Khan and St. Luke has suggested haplogroups for these iconic persons. If your haplogroup matches that of famous people who have been haplotyped, it will be mentioned on the description page that accompanies your certificate.