I am the Administrator of the SLAGLE Y-DNA Project through FamilyTreeDNA.
The SLAGLE Y-DNA Project was established to determine the common ancestors of the early SLAGLE, SCHLEGEL (variant spellings) families living in Colonial America. This is the only way to resolve and sort out the relationships between the early SLAGLE, SCHLEGEL families in the U. S., namely Berks, York, Adams, & Northampton Cos., PA; Frederick & Baltimore Cos., MD; Hampshire & Randolph Cos., WVA; Lincoln & Rowan Cos., NC; New York City, NY; Lexington Co., SC. Some of those or their descendants migrated to Wayne Co., KY; Carter, Knox, Lawrence, Jefferson, Roane, Sullivan, & Washington Cos., TN; Lee, Scott, Washington & Wythe Cos., VA; Daviess, Holt, & Polk Cos., MO; Gallia & Montgomery Cos., OH; Grant Co., IN; Georgia and elsewhere.
Documents have been lost, destroyed, or may never have existed; but science has progressed to the point where a simple DNA test may help answer some of our questions. If your SLAGLE, SCHLEGEL family has been in the U.S. by or prior to the Revolutionary War, you are invited to participate. Finding your true ancestors is very much worth the cost and the few minutes it takes to do the test. The Y-DNA Plus Test [25 marker] is preferred.
So far we have 2 distinct separate SLAGLE/SCHLEGEL lines. These 2 separate lines were not even a close Y-DNA match and could never be related.
One line is Henry SLAGLE, b. 1765 of Virginia, who was married to Christina KELCHNER; and Frederick SLAGLE, b. 1772 of Lincoln & Rowan Co., NC.
The second line is that of John Christian SCHLEGEL of Berks Co., PA.
Y CHROMOSOME DNA. The Y chromosome, has unique features that make it useful to genealogists: (1) The presence of a Y chromosome causes maleness. This little chromosome, about 2% of a father's genetic contribution to his sons, programs the early embryo to develop as a male. (2) It is transmitted from fathers only to their sons. (3) Most of the Y chromosome is inherited as an integral unit passed without alteration from father to sons, and to their sons, and so on, unaffected by exchange or any other influence of the X chromosome that came from the mother. It is the only nuclear chromosome that escapes the continual reshuffling of parental genes during the process of sex cell production. These three unique features mean that a male has a Y chromosome essentially identical to that of his father, and his father's father, and his father's father's father, and so on back indefinitely through all ancestral generations on the Y chromosome line, more succinctly called the Y-line.
If you are interested in participating in the SLAGLE, SCHLEGEL Y-DNA Project, please contact me.