"Theodric then steams in to back Icel’s claim that Norman French is an insignificant contributor to English whilst boasting openly that he cannot be bothered to check his outrageous claim with the Oxford English Dictionary."

Pet, they are not my outrageous claims, they are Bryson's claims. Forgive me if I trust his word a bit over yours. The words you list that are derived from Norman French are indeed common terms and they are important terms. That does not mean, however, that Norman French contributed a relatively (and I must stress that word) large number of words to the English language. If Bryson is right that only around 10,000 words of Norman French origin entered the language and the OED lists over 600,000 words (keeping in mind that the OED does not list place names or proper names), then it would seem to me that Norman French did not contribute a relatively large number of words to the English language. Don't get me wrong. In terms of the words it did contribute (crown, jury, and the various other words you name), it made an important contribution. But then the same could be argued of Old Norse and even more so with Latin.