Sharilyn Whitaker wrote the following to me today, and I think she has something you might be interested in, a hint to a link from Hempstead to Dutchess/Westchester Counties.
Marion Jaycox has forwarded your work on "The Family of Francis" (of Hempstead) to me. I have a pretty good handle on Francis Jaycocks SR with wife seen as Caecilia, (but whose grandchildren passed the name on as Sissile/Sussile). Their children appear to have included:
William who married Gertrude Lossing
Francis JR who married Maritie Wiltsie
Mary who married Mc Gregory Van Every
Johannes that married Caty Luckey
Thomas that married Mary Wright
David that married Grietje Koenig
Benjamin ?that married Mary "Polly" Hoff
I was most interested in this portion of your message: 1698 Census Hempstead
"It appears as if Grace was living alone, or with another family. If she was the widow of Francis, Sr. (d. ca. 1672) she was pretty close to 100 years old at least, if not more. I would guess that David and Benjamin were sons of William, son of Francis, Sr. , **and the Francis in Dutchess Co. may well have been a grandson of David's.**" Would you please tell me if the "Francis in Dutchess Co." to whom you refer, is the one called Francis, SR. that is seen with wife Caecilia? And precisely how does the David on the 1698 Hempstead census relate to Francis of Hempstead, the original emigrant. I think I understand this link, but would appreciate it if you would walk me through it. WHY do you say that it appears Francis was a grandson of David's? I tried to create an FTM file on my Poughkeepsie Jaycocks work, but I have SO many notes as to make it nearly impossible to read, and if I leave out my notes, there is no documentation of the links. I feel that I can solidly establish what I have sent you for Francis Sr. and Caecilia, and would be happy to correspond with you about my reasons. It seems we are getting fairly close to making the link from Poughkeepsie to Hempstead!
My answer, useless as it is, was:
Sorry about sending your message below back to you, but the Jaycocks (my 'generic' spelling) are soooo complex that I have to keep referring to it. The Francis I mentioned as living in Dutchess Co. would be the one who married Maritje Wiltse. Without dates this is a bit difficult to judge, but this seems to me where some Jaycocks genealogists deadend. What I was suggesting is that the Dutchess/Westchester Co. Jaycocks originated in Hempstead: that is, that they would be descended from those members of the family found in Hempstead in 1698, the eldest male apparently being David, and noting that he had children at the time. You appear to add a generation with Francis and Cecilia? Jaycocks; and I am certainly willing to accept your judgement, plus you identify Francis Jr.'s siblings. The Benjamin is probably a Benjamin Sr. with whom other Jaycocks researchers are stuck. Add to this that David has a son, Francis, and my theory is less wild than it once was; but it is still theory. I just feel better about it. Are you with me so far? All right, the next part is really theoretical, but it's the best I can do.
Accepting that David and Hannah in 1698 are husband and wife, and that there are three sons: William, Joseph and Francis, and that Benjamin is David's brother, and that Grace (I can't explain her presence in any other way) is their grandmother or great grandmother; then, the question is, who is David's father?
Now, don't get confused by the Francises. Francis Jaycocks and Grace, his wife, had children in or near Stratford-upon-Avon, Warwickshire, England. From what I have seen, this family came to America roughly 1635-1639 and ended up in Stratford, Connecticut. Francis' sons, Thomas William and probably Joshua, went to Hempstead, as did two of his daughters married toThomas Champion and Robert Ashman. Years later, before 1672, Francis went to Hempstead, got some land, and in 1672 gave it to his son-in-law, Thomas Champion, in exchange for being cared for the rest of his life, which may not have been long.
In the meantime, Robert Ashman led an expedition to what is now Philadelphia about 1663. Included in this were Thomas Jaycocks, probably William Jaycocks. Francis, son of Francis and Grace, may have remained in Stratford, Connecticut; at least that's the only way I can explain the presence of Jaycocks in the early 1700's there.Robert Ashman, and many of his relatives, returned to Long Island, especially Jamaica, Long Island. Thomas Jaycocks, married to Ruth, apparently died near Phildelphia, and there is some rumour that his son, also Thomas, went to South Carolina. William Jaycocks may have also returned to Long Island, probably to Hempstead. The existence of Joshua can be shown, and that Francis and Grace had a son, Joshua, can be shown; it's just not clear if the Joshua who shows up in Hempstead in the 1660's is that son, or one of Thomas or William. I opt for the theory that he was their brother.
So my guess is that David, in Hempstead, was the son or grandson of William Jaycocks, son of Francis and Grace; and that's another long guess. It's a matter of who was where when, and nobody has really done a detailed study of that. That is what my chronicle of days is for, to start that kind of chronological study. You can search for Jaycocks (that's why I stuck to one spelling) try to get all of the chronological references, create your own timeline, and add to it. Then look at who was where when. You could make side-by-side tables for each person, see when they were in the same place, or when they were contemporaries. A lot of work, but that may be what's needed to sort these guys out.
I note in the surnames of the wifes of the sons of your Francis the surnames: Wiltsie, Lossing and Wright. The first I do not associate with Hempstead, but could with Dutchess Co. The other two are names connected with Westchester Co. Quakers: a Wright marries a Flewelling there, and the Lossings (especially Peter Lossing) is associated with Hicksite Quakers in Ontario, as are Flewellings. I assume, that your Francis Sr. lived mostly in Dutchess or Westchester Co. I think you should post a summary of what you know about Francis and his family on a forums, as I think you have some information of great value to several people.
To summarize: this is theory; Francis and Grace came to America, their son, William, lived in Hempstead, and may have died there; David Jaycocks in 1698 may have been his son; Francis appears very likely to have been his son; Francis goes to Dutchess Co.? and his family are the Jaycocks found in and about that area. Doesn't really help, does it?
Thomas A. Murray