I pronounced history not as hishtry hut histry with the accent on the H and deemed it correct. Where as historian is pronounced as spelt. It is not an unusual thing in English for a word to take its own character. One good example might be: in writing " particular ", but in speech is pronounced peticular. I don't know, that is what I am lead to believe.

Would I presume is past tense of will. She would want you... here there is no doubt of what she would have wanted. Where as " She would have wanted you...", is merely a wish.