My DP's brother died very unexpectedly a couple of years ago. He was not married ans had a partner and two kids. There has been a complicated process because of this but she has got everything she thinks she deserves but I suspect not the benefit thing you mention. Having said that are you entitled to that if you have received a life assurance policy worth 100K?
It was a bloody mess but this was not helped by a few fators of the 'widow's' own making. As he dies without a will she had to make a clain on th estate and the advice given was that any judge wouls view her as a wife whose husband had died without a will. In theory my DP could have objected to her clain as his nephews interests were his responsibility.
Anyway even after witnessing all this we still have not got married. I think DP feels that it would be wrong to get married in response to his brother's death. Not sure if that makes sense.