Wry, there was a case a few months back where a mum gave all her money to charity and it was successfully challenged after her death by her daughter (try a surf for this as it's interesting). I have to say, my gut feelings were with the mum in that case as she was apparently quite sane and her daughter a bit of a 'waster' (forgive me if I got that wrong), and her decision was based on that she didn't believe her daughter deserved anything and would only continue her wasteful life with her money. But the judge still ruled that the daughter was entitled to the money as she was in dire straights and sort of 'needed' the money to live on. Wry, I would suggest - pretty categorically - that your dad is entitled to a goodly amount, perhaps half or perhaps it all. Certainly the fact she's gifted it all to charity should be easily challenged as it should be fairly easy to prove she wasn't 'corpus mentis'. This would be easier to prove if your dad had kept any record of how she treated him - has he? What could help here is if you could show - with good certainty - that your dad had called for your help on specific dates 'cos she was making his life intolerable. Based on your tale in this thread, I would say you have a pretty solid case. But you will need a decent solicitor. One fly in t'ointment is that her 'two wild sons' - who will also want her money, and who's testimony could be very useful to your dad in showing she was 'nuts' - will likely be hard to manage. If they are sensible, they will be able to come to some arrangement with your dad (I mean, your dad's solicitors) to agree what to do - eg: 50% to your dad (as he was the rightful spouse) and 25% each to them. As an example. But I fear they will want it all - and end up losing it all. Wry, from what you say, your dad is 'entitled'. But it needs handling carefully - with professional advice. Just because the witch has signed it all over to charity doesn't mean it will go there. However, there is another issue - a moral one - here; What does your dad actually need now? I would suggest it's chust enough to keep him looked after until his demise. No more. What do this "woman's" sons deserve? F'all. Really, nothing. People need to get it into their heads that they are not 'entitled' to their parent's money. The parent's money belongs to the parents. To look after them. They 'earned' it - they can spend it. No-one else is actually entitled to it. Except - the remaining partner of that couple should be able to live the rest of their lives - as far as possible - the way they lived it as a couple. After that, now't. It is no-one else's money.