American Founding Father and third President of the United States (1801-1809).
Principal author of the Declaration of Independence.
Son of Peter Jefferson (a planter and surveyor) and Jane Randolph (daughter of Isham Randolph).
Y-DNA STR profile data derived from DNA testing of five of his paternal line relatives (living descendants of his paternal uncle Field Jefferson). This DNA analysis was conducted to determine if Jefferson was the father of any of his slave’s (Sally Hemings) children.