TAG 88:195-200 is now online at AmericanAncestors (for members). Author Leslie Mahler, FASG, provides what looks like pretty conclusive evidence that Margaret, wife of William Hunting, wasn't the daughter of a William (as suggested by RCA in 1990) but was instead the daughter of John Randall/Randolf and Ellen Woodcock.
In her 1607/8 will, widow Ellen Randall of Topcroft names not only her daughter Margaret Hunting but also son-in-law William Hunting as well as John, Mary, Nicholas and Samuel Hunting, all matching known children of William and Margaret (apparently there were eleven baptized, not all came to New England and not all are profiled here on WT).
This would confirm the 28 Sep 1578 baptism (daughter of John) and refute the 15 Nov 1579 baptism (daughter of William).
I'll make some updates to the profile from this new source!