Many descendants of Johan Jacob Kuhn have had DNA tests, but only three men are known to have had a Y-DNA test. This chart terminates with the testee if deceased or with the most recent deceased ancestor of the testee if still living. All male direct descendants share the haplogroup R-M269 (R1b1b2a1b4c, the Alpine Celt motif) and probably the surname Kuhn or a variation (Coon, Coons, etc.). Join the Coon DNA Project at Family Tree DNA.