shoud i challange my grandfathers will

mountainofdebt

I wouldn't see the fact that you haven't been left anything in your grandfather's will as being as being anything sinister - tbh I think its a generational thing.

My FIL left everything to the OH and SIL and in the event of their death, should it have happened before his death, to the grandchildren.

If your grandfather was anything like my mother, to have left you something might have meant that he felt obligied to leave something to his other grandchildren, regardless of how he felt about them

Personally I would see the time you spent with your grandfather as being more valuable than any amount of money he could have left you.

Sounds to me that grief is making you think that there is something sinister going on when really there isn't.