88 plus -- but there are a number of questions missing, and I don't actually know my grandparents' ages when they died -- except my paternal grandmother was well into her 90s and quite senile -- but she lived on her own reasonably well and healthy until her late 80s.

I could actually live to be a great-grandmother! And my kids will be saddled with supporting me, unless I start making more money and not dawdling around on the 'cat!