To quote from 747:
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Although the Jessups had lived in Connecticut for several generations, Joseph Jessup moved his family to the “Upper Nine Partners Patent” in Dutchess County, N.Y., in 1744.
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From [JB]28:
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The career of Joseph Jessup, of Stamford, Conn., and his descendants is in striking contrast with that of his brothers, Edward and Jonathan. He was the first and only member of his father’s family to seek a home beyond the bounds of New England, and neither he nor his children could have anticipated the results which were to follow from this removal. That both he and his sons were men of more than ordinary business ability cannot be doubted. ...

After the death of his wife in 1743, he emigrated with his three sons, Edward, Joseph Jr, and Ebenezer, to Dutchess County, in the adjoining colony of New York, - a distance of less than one hundred miles, and yet so far that his mother in her will appears to think it possible he might “not return alive”. ...

Here begin those transactions in real esteate, both on their own account and as agents for other parties, which rapidly increased in number and importance during the next fifteen years, and whichled them eventually to locate at Jessup’s Landing near the head-waters of the Hudson River.

The sons, Edward and Ebenezer especially, were the friends of Sir Wm. Johnson, the British Superintendent of Indian Affairs in New York, and one of the most remakrable and influential men in that colony. ... The Jessup brothers were also in various ways associated with many of the English Colonial officials, - more especially Governor Dunmore and Gen. Wm. Tryon, the last of the royal governors, to whom they were indebted for many favors in securing for themselves and for their associates grants of large tracts of land obtained either directly from the government or indirectly by purchase from the Indians. They were shrewd and successful men of business, inheriting the financial talents of the father, and ready to take hold of any adventurous scheme which might aid them in bettering their fortunes.

...

Joseph Jessup was born in Fairfield, Conn. (parish of Green’s Farms), in 1699 (baptized 4 July). He settled quite early in Stamford, - not later than 17 Dec., 1723, when he received from his father, then living in Stamford, a deed of land of the value of £199. ... Joseph Jessup went to Montreal, Canada, at the opening of the Revolution, and died there in 1778, aged seventy-nine.
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As a side note, it seems the process for stealing Indian land was for “the purchaser ... to be at the expense of first vesting the Indian right and title in the Crown before he could obtain the patent which alone could guarantee him in possession of his purchase. The fees exacted were often very considerable.” In other words, the brothers had to pay large bribes to officialdom before they were allowed to steal the Indians’ lands. What a couple of rogues. Still, perhaps they were no worse than anybody else of their time.

She is buried with her infant daughter Leah in the old burial-ground near Noroton River, apparently.28 Leah was one year and 5 months old.