I have been looking at Darby Field the emigrant to New Hampshire from the perspective of his supposed grandfather, the Reverend John Field of Cripplegate, London. I have found Pierce's genealogy for this branch of the family to be full of inaccuracies. (F.C Pierce "Field Genealogy" volume 2 page 949 onwards, see profile of [https://www.wikitree.com/wiki/Field-1908 John Field of Cripplegate] for more information.)
There is no evidence that the Reverend Field's son John left London to live in Boston, Lincs. There was already a Field family in Boston, Lincs from at least the late 1500s. A John Field married Ellen Hochinson on 18 August 1607 (not 13 August 1609 as Pierce claims) at St Botolph's church, Boston, Lincs (the only church in Boston at the time).
There are no children baptised at this church to a John Field. John Field died in 1624 and the widow Ellen Field in 1639 and both are buried at St Botolph.
Pierce states that John Field signed the Exeter Combination in England which is obviously incorrect as it was signed in Exeter, New Hampshire in 1639, and also 15 years after John had died. (Darby Field made his mark on the Exeter Combination.) There was no Darby Field baptised in Boston (or anywhere in England that I have found). He may well have been Irish as Winthrop described him.
Is there any evidence which is not Pierce's unsourced work or a copy thereof? Otherwise I would suggest disconnecting him from his current supposed parents and making his birth place and date unknown.
Jo, England Project Managed Profiles team.