As you can see 6 subjects match exactly (the turquoise sub-group) and--assuming these subjects' paper trails are correct--their shared haplotype is probably that of the immigrant John Thurber b. c. 1620 as well as that of Benjamin b. 1720.

All the other groups have unique haplotypes. This may be because of what are called non-paternity events--most typically adoptions and infidelities. Some lines may go back to a Thurber woman whose son took his mother's surname. As more men participate, it should become clearer where these Thurber lines began genetically.