Based on the analysis in the source listed below it is probable that "Fitch" was not the name at birth and this profile should be for "Sarah "Unknown" Bradford.
The author's conclusion: "In summary, I believe it to be highly likely that Major William2 Bradford’s second wife, heretofore identified as “a widow Wiswall,” was actually Sarah (_____) Griswold, the widow of Francis Griswold of Norwich. The evidence is admittedly indirect, and no definitive proof for this identification can be produced at this time. But in my opinion the evidence strongly points in this direction."
Sarah Unk. ... She passed away in 1675.
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