After working at Cemetaries all summer, I'll tell you, 90% of them are cupples and most of them the man are older and normally died first, then the wife lived to like 30 years longer. lol Not all, thats just how it seemed. But if the man lasted as long as the women, or they both lived into they're 80's, yeah, one seems to died shortly after the other.
When walking throw grave yards all day, there isn't much to do other then listen to music and observe. lol