I am the administrator for the Hatfield DNA Project. I started the project back in about 2002.
If you are a male Hatfield I’d like to encourage you to get your Y-DNA tested so you can find out (or verify) which line of Hatfields that you descend from. If you are a female Hatfield descendant, you can get a male Hatfield relative to get tested to prove your Hatfield line of descent.
If you are interested in getting tested, please be aware that you can get a discount on the test if you order through a current surname project. If you wish to order a test through the Hatfield project, go to http://www.familytreedna.com/group-join.aspx?Group=hatfield
If you want to contribute to DNA testing on your Hatfield line: http://www.familytreedna.com/group-join.aspx?Group=hatfield or contact Elaine Hatfield Powell at email@example.com
Online Hatfield resource and database (searchable by name): http://www.ghat.com/hatfintr.htm
If you would like more info, contact Elaine Hatfield Powell directly at Hatwelle@aol.com