I remember for years (thru the '70s, and maybe into the '80s), that “The Guinness Book of World Records” had an entry for a sextuplet. I think it was the oldest surviving sextuplet, but I’m not sure–and I don’t have the old books handy anymore.
Anyone with an old book have this info? I just remember that it was a woman, but don’t remember the details of the sextupletcy.