Okay, now I know of two people. I’ll start my list.
Seriously though, I know there are exceptions to everything. Skinny people eat enormous amounts of food and remain thin; chubs eat little and remain chubby; smokers don’t die of lung cancer. That is little reason to rejoice. Good common sense must prevail in all of these scenarios. I’m not going to become obese and say to myself, “well, oneamaricanvoice’s two grammies were just fine.” No, I’m going to listen to sound medical and scientific evidence but not get too ridiculous about it because I like to enjoy life too. Moderation in all things as St. Paul once said.
Since you're starting a list...
My mother's parents were both obese, albeit mostly in their later years (post 50 or 60, I think). My grandfather was almost perfectly round when he died (natural causes) at the ripe ol' age of 94. My grandmother didn't get quite that big. She died (cancer) a little earlier, around the age of 90 or so. My mother, not coincidentally, is getting somewhat portly (to be kind) in her late 60's. She's a long way from dead, so far as I can tell. I have a step-mother in Florida that's always been larger than life. She's in her 70's now and in real danger of kicking the bucket. She drags an oxygen bottle wherever she goes. I suspect that has more to do with her past smoking habit than anything else (but I'm guessing). My dad is also overweight by more than a few pounds. No doubt this is a factor in his high blood pressure which, in turn, was likely a primary factor in the stroke he had a few weeks ago. He's in his mid 60's. If he behaves himself, he might make it to his 70's.
Make of it what you will.