Since the Y chromosome is passed from father to son unchanged, except for a mutation approximately every 500 generations, testing the Y chromosome from males of the above surnames will provide us with a genetic finger print of each individual tested. Thus, we will be able to determine whether specific individual men share a common male ancestor, if a set of men with the same or similar surnames are directly related through a common ancestor, how many different common male ancestors any given group shares and to which broad haplogroup each individual male belongs.