A couple of years ago DH's grandfather gave us a substantial financial gift (he was very wealthy). We'd brought a house that needed a huge amount of repairs and this money funded all of the repairs. We never asked for this money it was a spontaneous gift - his view was that we'd make better use of it than he did. We were very close to him and cared a lot for him prior to his death late last year. He has sadly now passed away. He has left the main part of his estate to be split between his 12 grandchildren (many of whom haven't seen him in the last 5 years). They are now insisting we give the gift back (taking it from the inheritance) so it can be divided between the 12 grandchildren with the rest of the of the estate (it has turned rather nasty). We're not wealthy, but we are comfortable, but can't afford to give back the money - basically it means we'd have to give £10k back to them as well as not have our 'share' of the inheritance. I've not met 5 of them but now recieving really nasty emails, texts etc. What would you do?