Thanks for that Jenny. that ties in with what I also believe.
The Grey area is back further when the property was in the ownership of Jean de Bretagne (1266-1334) in the early 1300's around the time when we get the first mentions of the de Waneburns/Weneburns. Jean was the second surviving son of John II, Duke of Brittany and his wife Beatrice of England, thus being a grandson of Henry III of England and nephew of Edward I of England. It is also believed that the property was used by King John as a hunting lodge late 1100's. So were the de Waneburns just living at the property or in the employ of Jean? This seems unlikely as the de Waneburns are mentioned in the tax lists as landowners so they must of somehow acquired the property ,late 1200's.
How did Jean de Bretagne come to own the property and then the big question of how the original Wenban's came to hold this substantial property?