I have NC for this. I'd appreciate some insights into our situation - it's kind of a AIBU, but don't want to post in AIBU, cos it's not that kind of issue. And anyway I know IANBU, but it's still a weird one. Anyhoo...
So, my dh of 22 years is a lovely bloke, with parents who were impressively horrible in all sorts of ways. FIL died about 10 years ago, MIL is still alive. The relationship has always been tricky, MIL's stock-in-trade is the blistering, vicious personal attack in response to any behaviour that does not meet her particular, highly idiosyncratic, expectations, plus variations on the silent treatment. Horrid, but we somehow muddled through from a (probably misplaced) sense of obligation, and for the sake of the children. Since FIL's death things have deteriorated further, and after many rounds of the kind of hideous scenarios familiar to Stately Homes regulars, we are now no contact with MIL and BIL/SIL.
So apropos of an article in last week's paper, DH decided that he'd quite like to see a copy of FIL's will, and ordered it up from the probate registry. Turns out that FIL's will, dating from several years before he died and well before any kind of NC falling out, essentially leaves all of FIL's share of the house, the land and everything else to dh's younger brother. We might have assumed that this was a 'mirror will' kind of scenario in which the other half came to dh on MIL's death, were it not for the inclusion of a paragraph which specifically states that they do not want dh to inherit the family home or the land (quite a lot of land - it's not exactly a landed gentry scenario, but it's a big house with generous grounds, woodland, etc).
It's hard to know how to feel about it, tbh - dh and I were both torn between "WTAF"? and "well tbh it doesn't really surprise me". DH has actually been really poleaxed by it, not because he was expecting to inherit anything (particularly since NC) but because the will predates any major family falling out, and covers a period where we were all in regular contact with the ILs, the children staying, dh helping them with legal and tax paperwork, work on the land etc. Deliberately stating in your will that one of your dc is not to inherit just seems like such a spectacularly shitty and divisive thing to do - ironic given that one of MIL's main gripes with us has been that we are splitting up the family and destroying the relationship between our dc and their cousins. Hmm, because obviously disinheriting one set of grandchildren in favour of another a good ten years before any actual falling out is a really good way of promoting family harmony... 
Dh has been coming to terms for years with the fact that his younger brother was the favoured golden child, but even so, this is a corker for him (and us) to get our heads round. And at some point our dc will realise that their grandparents home which they used to visit and stay at has been given to their cousins but not to them - ironically, dh's brother's family are really very well-off indeed, while we work in the public sector so are on rather more modest incomes (not that that makes any difference to the dynamics of the situation, but it does add an extra twist).
I know we're well shot of the lot of them, but it's still a bit of a head-fuck. And makes it less likely that dh will be able to reconcile with his brother after MIL's death, since BIL gains financially from the fact that dh has basically been screwed over. It's the emotional repercussions rather than the financial ones that are the hardest, I think, but obviously the two are intertwined.
Anybody want to help us digest this latest plot twist in the unlovely family saga?