Here’s what I did:
1. Listed the birthplaces of all 16 2nd great grandparents. For simplicity, I’m used my Mom’s 16.
2. Made a pie chart of said ancestors and birthplaces.
Here’s what it looks like:
All of my Mother’s 2nd great grandparents were born between 1820 and 1854 and all of those born overseas, died in America. I’m a little surprised at how many ancestors at that time were already in America.
This is what it looks like if I include the individual states:
Here’s the data set (my Mom’s 16 great-great grandparents):
Harman A. Updegraff – Pennsylvania
Margaret Miller – Pennsylvania
David H. Davis – Wales
Catharine Annie Harris – Wales
William T Hutchinson – Pennsylvania
Ann Marie Jamison – Pennsylvania
Egbert T Zillifro – Pennsylvania
Sarah Ellen Willis* – Pennsylvania
William W Duncan – Ohio
Jennie Salina Ford – Ohio
James Rostrom – England
Annie Nora Slave – Ireland
William Murphy – Ireland
Katherine Aspery – England
John Richards – England
Ann Williams – Wales
*Unconfirmed -some sources indicate this may have been a Seneca Indian named Rebecca, also likely born in Pennsylvania.