*Completely unsearchable - even at Google site.

Willoughby genealogies may be found on actual book pages 750-754.  My Adobe Reader lists those pages 
as 767-771.

There is also an Index at the end of the book, but it contains only a fraction of the Willoughbys mentioned 
in the book.  The W'by surname is found on actual page 800 or Adobe page 817.

There may be more pages...Have not read enitre doc.

SOURCE:

Google Books
LINK:  
http://books.google.com/books?id=KTETAAAAYAAJ&printsec=frontcover&dq=history+of+plymouth 

"History of Plymouth, New Hampshire" 
By Ezra S. Stearns, Moses Thurston Runnels, Plymouth (N.H.). Town history committee, Town History, 
Vol. II  



History of Plymouth, New Hampshire: Vol. I. Narrative--vol. II. Genealogies
By Ezra S. Stearns, Moses Thurston Runnels, Plymouth (N.H.). Town history committee, Town History 
Committee, Plymouth (N.H. : Town)
Published by Printed for the town by the University press, 1906
Item notes: v.2
Original from Harvard University
Digitized Dec 19, 2007