I’m thinking along the lines of older spouse dies, younger spouse marries someone younger and becomes the older spouse. Then older spouse dies again and repeat. Has anything like this happened in a long enough chain to be significant? Is it so mundane no one cares?
It sounds like you’re thinking of Helen Viola Jackson. I didn’t know that, but it was at the bottom of your Wikipedia link :)
Ah yep, you’re right that’s the one I was thinking of. Both are pretty interesting, forget how young this country is sometimes.