| Birth | Abt 1785 | She was given title to property in 1808, and must have been at least 21. | | | |
| Extra information | 1808 | Multiple land records for Mary. The first clearly says "daughter" of Lawrence. None of the deeds mention Lawr's wife. (In fact, none of Lawr's deeds name a wife. This suggest wife was already dead; see NY dower laws.) - Ontario County, New York, USA | | | |
| Land records | 1809 | Lawrence sells land to "daughter" Mary for 1 cent. - Gorham, Ontario, New York, United States | | | |
| Land sale | 1814 | Mary sold property to Benjamin. (Book 20, page 429.) Deed is generic; it does not give any indication of their relationship. Best guess: This is Benjamin buying out his sister, after their father died. - Ontario County, New York, USA | | | |