Pg 470 ofThe Penniman Family 1631-1900, for sale at the Braintree Historical Society, indicates the Society has in its Penniman Library individual files a picture of 167.144.22 George Henry Penniman, Mary's father.There is also a brief sketch on him by his granddaughter; his wife's ancestry; a copy of a letter written by his son from "Penniman Point".
Braintree Historical Society, 31 Tenney Rd, Braintree, MA and on the web at braintreehistorical.org to ask them for assistance.Or if you live in Mass a trip would be worthwhile.
A file folder numbered with George's unique number will hold this and any other information added.As Mary had no issue, her lineage ends with her death insofar as the Penniman books.However there are cousins noted.
167.144.22 George Henry Penniman
Carol Taylor, Penniman 147.252.441.2(3)(1), Cape Cod, MA