Welcome to Patterson Genealogy

My oldest proven Patterson ancestor is my ggg-grandfather William Patterson born abt. 1784; died 1854 or 1855 in Rostraver Twp., Westmoreland Co., Pennsylvania.  (See what is known about William in my paper posted on this website.) William was raised by John Patterson Esq., son of Thomas Patterson, Sr. Thomas Sr. was born abt. 1724 and died 1822 in Washington Twp., Fayette Co., PA.  (See my paper on this Thomas, posted on this website.)  Thomas Patterson Sr. was a Covenanter. (See my paper on Covenanters posted on this website.) Extensive Y-DNA testing has proven that my ggg-grandfather William was not biologically related to Thomas Patterson Sr.  However, Y-DNA testing has proven that my ggg-grandfather William was fathered by a Patterson man of a completely different line—a Patterson line settling early in colonial Pennsylvania. For over a dozen years I have tried to solve this mystery of my ggg-grandfather William’s parentage, and in this process I have extensively researched many Patterson families of colonial Pennsylvania.  Hence the number of papers posted on my website.  I’m hoping that my research can help someone find his/her Patterson ancestors.

As of this date, I still do not know the biological father of my ggg-grandfather William.


Janice (Patterson) Rosenthal

April 22, 2018