I don't know if it's relevant or ties in at all, but I have Day ancestors just over the border into Northamptonshire (Higham Ferrers way).
Henry Day (c. 1540 - 1601 or 1611) and his wife Mary Day (c. 1540 - 1587)
next generation: Francis Day (1569 - 1617)
next generation: Hewen Day 1615 - 1695 and his wife Hannah Day (circa 1640 - 1684)
next generation: Hannah Day (b. 1666) who married Robert Freeman
The family drifted south into Bedfordshire, and is in Sharnbrook and Riseley a couple of generations later, so they may well be connected.
If you'd like more detail, PM me your e-mail address and I'll send you the full text of what I have about them.
Incidentally, "Hewen" is spelled no end of different ways (including one exasperated transcriber who eventually put "Heaven?"). I suspect that this was really Ieuan ...