NOTE: From an old resource(MD, 3:109), he (and presumably his first two wives) is buried at Burial Hill in Plymouth,MA. This may be an assumption made based on the fact that he had been thought to have built his homestead there in 1677 which included timbers from the old Burial Hill fort. In 2011, a contributor reported the following problem in response to a photo request that had been made: "I located the grave where William Harlow who died 1691 is buried, and unfortunately there is a stone broken face up on the ground and it seems it has been like this for some time. The stone is illegible and I cannot say that it is his. I could not find evidence of name or dates on it." But it should be noted that, at this point in time, historians in Plymouth solidly agree that no there are no other burials from the 1600's at Burial Hill aside from the handful that have been documented. As far as a person finding a illegible gravestone on the hill which was on the ground, there are many.
The Harlow Old Fort House was originally located on Court street, it is now located on Sandwich street in Plymouth. William Harlow salvaged materials from the Pilgrim's fort on Burial Hill to use in the construction of his new house. He did not build his house on Burial Hill.
He married, first, on Dec 20,1649 at Plymouth,MA, Rebecca Bartlett.
He married, second, on 15, 7th mo, 1658 at Plymouth,MA, Mary Faunce.
He married, third, as her first husband, on Jan 25,1665/6 at Plymouth,MA, Mary Shelly.
Children(by first marriage): William Harlow, Samuel Harlow, Rebecca Harlow Cushman, and William Harlow Jr.
Children(by second marriage): Mary Harlow Dunham, Repentance Harlow Lucas, John Harlow, and Nathaniel Harlow.
Children(by third marriage): Hannah Harlow, Bathshua Harlow Sears, Joanna Harlow Barnaby, Mehitable Harlow, Judith Harlow Church Barnaby(whose first husband was Joseph Church), and Benjamin Harlow.