Who Eleanor's parents are is important to know (for me, especially, because a whole lot changes, naturally, just by one parent vs. another, as I am sure you are aware).
I have no investment in making up anything to go any-who specific - I genuinely want to get this right. Many of my roots go very deep (on Ancestry.com, anyway), so for me, it's not about who's in the tree, it's about where it goes, so I prune out anything that is disproven. I am in the process of migrating my tree to WikiTree, which is tedious, but well worth it.
BTW: Absence of a name in a will proves nothing. Because a child is not named, for example, is not "proof" that that child did not exist. Presence, is definitive evidence.
So, I know who Hugh atte Fenn's parents are, and his grandfather has quite the reputation. Fenn is not Fiennes... The daughter of Eleanor was Margaret Fenn; not a Fiennes, either.
Given that my Ancestry.com profile has upwards of 45,000 connections, if I can get this right, it might just affect something.
What are the possible parentage scenarios if Eleanor were a Woodville? That's quite an intriguing theory. I like the notion of working to understand what's behind wills - in the inclusive sense - even the witnesses can reveal the circles travelled and company kept.
Thanks for writing, I hope to hear more.