Mary Beckwith Griffin wife of Samuel Griffin

There are no records for the death of Mary Griffin. She is referred to as Mary Griffin of Killingworth in her husband Samuel Griffin's probate records. But how long did she survive after the death of her husband? There are hints that her daughter Jerusha was part of the household of her older sister Thankfull probably until the age of 20 or 21. Such an age would have been in 1756/7, Was Mary dead by then? Her two sons, James and Samuel were appointed guardians in the probate records. This means that they inherited assets from their father. We find in the land deeds, listed under James's descendants, references to property previously owned by Samuel or Mary Griffin. The fact that we have deeds that are referenced to Mary is a clear indication that she lived for some time after the death of her husband. My interpretation is that James inherited the majority of his father's property and that Mary probably lived with James until her death in what is now Clinton, CT.