Simon Sartwell was born on November 14, 1722 in Charlestown, New Hampshire and married Hannah (last name unknown). After Hannah's death in 1771, he married Mary (last name unknown). Simon and Hannah had eight children:

	Obadiah Sartwell
	Simon Sartwell, Jr.
	Electa Sartwell
	John Sartwell
	Hannah Sartwell (died 1756)
	Hannah Sartwell (born 1760)
	Rhoda Sartwell
	Esther Sartwell

At some point in time (the exact date is unknown) when Fort #4 was in danger during the Cape Breton War, a band of militia commanded by Robert Dinsmoor (1692-1751) came to the fort's assistance from Windham, NH. Little did Robert Dinsmoor and Simon Sartwell (Obidiah Jr's. son) dream that some one hundred plus years later in 1850, two of their great-grandchildren, namely Helen Milne Dinsmore and William Lovell Sartwelle, would meet in Texas and be married.

After Hannah died, Simon, Sr. married Mary ??. They had one son, Asa, who died in infancy. Although Simon, Jr. was grown when his father remarried he must have grown to love his step mother, Mary, very deeply, as he referred to her as his mother in his will and instructed his wife, Dolly, to care for her as long as she should live.