Good. If that last situation fits you, you should look to apply for survivors benefits asap. I'm telling you this, because there are cases in which benefits may not be retroactive.
Oh, i see, and doesn't like how it sounds. I suppose i need to get into it. Anyway, what documents would i need to apply?
Well, required documentation would depend on the benefit you will be applying, for example, Widows / Widower or surviving divorced spouse's benefits or child's benefits.
Are you in possession of all documentation?