Hugh "Lupus" d'Avranches, 1st Earl of Chester - Henry i's son?

Here is a better link to the original manuscript in the Harleian Collection:
https://ia600402.us.archive.org/32/items/visitationofches00glov/vis...

A quick summary from the very beginning describing the frontispiece of the book and its author:
"From two almost identical manuscripts in the British Museum numbered 1424 and 1505 in the Harleian Collection, etc.:

A folio by Mr. John Saunders, relating to the County Palatine of Chester, 1424. The cover of this folio as follows:

1. Arms of the King of England impaling those of the Earl of Chester; etc.....
2. Badge of the Prince of Wales in a Glory: etc......
3. On the backside of the frontispiece:
(translated from Latin)

"Chronicle accounts Palatine Chester County, from its acquisition by Hugh Lupus, or Wulf, grandson of William the Conqueror; his individual decorations."

My cousin is a lecturer at Fordham University and I'll send this information over there and see if he can get someone to interpret what is said in the manuscript.