My paternal Grandmother was born in the same time period ; Margaret Clark in Denville NJ. She is still living and in her 90s. Her mother was Ireland born and died during childbirth. So she was raised by members of her father's family, the Clarks. They are a large family that settled in North Jersey early colonial times. I've only recently began seriously working on my ancestry but there is a lot of information on that Clark family branch. The core of the family is Denville, Essex, Rockaway in Morris and Essex counties North NJ . My DNA is posted feel free to check and see if that helps