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Hamman Y-chromosome study
Posted by: Brian Hamman (ID *****0565) Date: November 16, 2003 at 18:05:15
  of 375

My name is Brian Hamman and I am a descendant of David Hamman, born in 1814 in Westmoreland County, Pennsylvania. He was married in Ohio and then moved to Indiana. His descendants are found today throughout the United States. It is thought that his father was Jacob Hammann, whose father came from Germany. Anyway, you can check out my website ( to click on my family tree for extensive details on this Hamman line.
There are quite a few different Hammans that immigrated to the United States in the late 1700's. To try to connect or distinguish these different lines, Phil Ritter from Stanford University began a Hamman Y-chromosome testing project through a company in Texas. We have already recruited 10 different participants and already found two very distinct Hamman lines. You can see the results at his website:
The science behind this new form of genealogy is in fact quite strong and Phil or I would be happy to explain. Any Hamman males are welcome to join this study. It costs $99, but if your ancestry is well defined and could add to one of the two lines already identified, we are willing to pay at least part of your costs.
Please feel free to contact me if you have any questions or comments on Hamman genealogy or the Hamman Y-chromosome testing project. Hope to hear from you.
Best wishes,
Brian Hamman

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