The Rev. Jonathan Winchester was the grandfather of Oliver Fisher Winchester (1810-1880), founder of the Winchester Arms Co, according to the following references:
The files of the Aspinwall Family by Stephen Lawson (Kinnexions.com) gives the genealogy of Oliver Fisher Winchester: "Peter Aspinwall and Remember Palfrey Samuel Aspinwall and Sarah Stevens Mehitable Aspinwall and Samuel Craft III SARAH CRAFT AND JONATHAN WINCHESTER (*) Samuel Winchester and Hannah Bates Oliver Fisher Winchester"
The book An Abridged Compendium of American Genealogies by Frederick Virkus, 1925, gives the genealogy of the Rev. Jonathan Winchester: "John Winchester (1616-1694) married Hannah Sealis John Winchester (1644-1718) married, 2nd, Joanna Stevens Henry (1682-1750) married Frances White REV. JONATHAN WINCHESTER (*)(1717-1767)married SARAH CRAFT"
* He would have been the "Rev. Jonathan Winchester, first" listed in the Field Genealogy.His son, Henry, had a son who was also Rev. Jonathan Winchester (1781-1835)
So Oliver Fisher Winchester's line is from John Winchester and Hannah Sealis through John Winchester and Joanna Stevens.