Hello Tonyole 1. If I had have known that, I would have ............. Not correct.
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Hello, Mr Pedantic. May I call you Mr P?
{Please don't ever take my direct manner in these discussions as any type of personal attack. I only want to address the facts. If I believe you or anyone to be in err, I'll plainly say so and I hope you and others will do the same for me. And point out why too please.}
2. 'If I'd've known it was incorrect, I would have told you' (= 'If I would have known...').
...
JTT: There is no grammatical reason to suggest that 2 must mean . I believe it to be an intensifier as we also hear it, even in relatively formal situations as,
"Had I have known it was ... " OR "If I had've known it was ... "
This quote seems at variance w