TaylorS wrote:I've read that spoken Old English resembled early Middle English far more then it resembled the "Standard Literary West Saxon" we normally think of as "Old English", which was a standardized and very conservative form disconnected from actual speech. Basically, as the native Celts and (later on) the Norse settlers took up English they mangled the grammar and their kids inherited the mangled grammar. Then the Norman Conquest led to the abandonment of Standard West Saxon and thus the reality of the spoken language finally became reflected in writing.
Well, it is because the language continued to change while the standardisation did not. (And this is why "standardisation" is important... Current English orthography is neutral to phonetics, and it can be understood by any speaker regardless of dialect. This is just perfect, and I would fight to death against any attempts to make it more "phonetic.")
West Saxon was first written as it was spoken. While most primers state "sc" was pronounced like "sh," in the earliest phase it was in fact pronounced like "sk." Sound changed, spelling didn't reflect the sound anymore, and it wouldn't be surprising if Late Old English (under the cover of West Saxon) sounded similar to Early Middle English. But still this is not to say West Saxon standard was universally used - far from it. Dialects were still present both in speech and writing, and different manuscripts show dialectal variations. (One interesting case would be Beowulf, which shows a composite of various Anglo-Saxon dialect elements and it got partially "normalised" into West Saxon by the scribes of the surviving manuscript. It's suggested that the original was Anglian.)
As you mentioned, West Saxon standard was abandoned almost immediately after the Norman conquest. The "continuations" of the Anglo-Saxon Chronicle written after the Norman conquest show that the scribes abandoned the West Saxon standard and wrote in their dialect. (It's the case with the "Peterborough Chronicle") These addenda are hence better classed as Early ME rather than Anglo-Saxon, and it's interesting that the scribes made a copy of the Chronicle
after 1066, preserved West Saxon text but added more entries in Early ME. While they must have had the knowledge of West Saxon, they didn't bother to write in it.
There was Norse influence, but not in every dialect. Basically, it influenced the dialects spoken in the former Danelaw - Northumbrian and East Anglian. 12th century (Early ME) texts from the southern England (formerly Wessex) show very little Norse influence. And since the literary output of the former Danelaw was practically nil, we have no idea how extensive the influence must have been and the Norse influence can be detected only from Early ME texts from the former Danelaw region. And for the British-Welsh influence, I don't think this could be asserted with any degree of certainty in regarding Anglo-Saxon. There was, if any, very little British influence on it.