Here’s one for the books — Maggie Thatcher had two affairs whilst married to her teetotal husband Denis.
According to some lurid book, Mags was humping Sir Humphrey, and some other dude early on in her career. Sir Humphrey Atkins seemed to receive magical promotions out of nowhere despite being a useless politician.
These are, however, spurious known unknowns that are frankly not really known or unknown, so take it all with a pinch of salt. It sells books.
Remember that any event that happened before the internet, surveillance society is pure hearsay.
The Iron Lady had an Iron Grip with her Iron Bottom Lip.
