You can find the information on you 4Great Grandmothers parents in Volume 1 of the books by Judith Olsen. Look on Page 219 and it gives her, her husband and parents names. This Volume will take her back to which of Richard and Abigail's children she descends from.

Note: I have no financial connection with the mentioned books. They are just the best reference sourse for anyone searching LIPPINCOTT in this country.