] That is a speculation about Lady Anne but it seems to be a matter of going on what is not there i.e lack of documents rather than what is.

This is a question for our life-and-times experts, I suppose, but since Darcy might have been as young as 12, would one expect there to be documentary evidence? Darcy and Anne would have been too young for any official engagement, so the lawyers wouldn't have drawn up any papers yet. For all we know, Lady C did indeed have letters from her sister mentioning the possibility. And even if she didn't, that might only be because they discussed it face-to-face. (Not all sisters were as faithful in corresponding as JA and Cassandra.)

] To me, there's simply no evidence to suggest Lady A thought the match an excellent idea, we only have Lady C's word on it.

And to me, there's simply no evidence that she didn't, and some suggestive evidence that she did.

] I don't think the fact Wickham knew of engagement rumours necessarily affirms them- he may've simply heard Lady Catherine talking when she visited Pemberley.

That's one possible explanation, of course.

] Actually, I have the impression that by Ch.58 when Lizzy accepts Darcy, he has learnt humility in helping the Bennet family while Lizzy has learned forgiveness of Darcy's past over-bearing pride and prejudice against her middle class background.

Yes, I think that is true, but in his explanation of where he originally got the attitudes that offended her so much in his first proposal, Darcy blames his parents (though he tries to exempt his father a little).

] With P&P, Austen criticizes the class structure of Regency England. With the charecter of Lady Catherine JA presents a satire of the upper class,showing a woman more concerned with superficial morals, social hierarchy, enforcing social etiquette rather than setting an example virtue or real manners.

True, but that doesn't mean her sister would not have shared those attitudes -- in fact it seems not too unlikely to me that she would have.

] By the way, I didn't mean to say Anne would make Darcy the ideal wife. I meant those reasons of keeping the esates within the family and maternal nobility were excellent reasons in the mind of Lady Catherine, particularly as she had no son.