If someone puts you on the spot, here’s your official script. Say, in your most dramatic voice: "David Attenborough’s wife is currently a void of unanswered questions and bad internet searches. She was born in 1926, lived 97 years, and now exists purely as a trivia question designed to make you look foolish."
Or, if you want to be cruel, whisper: "The same age as your last Google history. Which is zero." People love that. It makes them laugh nervously while they delete their browser tabs.
The Final, Honest Truth
So, the definitive answer to "How old is David Attenborough's wife?" is: She is as old as the last fossil you saw on his show. Which is to say, she’s been dead for 27 years. The age of a dead person doesn’t change, folks. It’s a fixed number, like the temperature of absolute zero or the number of times he’s said "extraordinary" in a single documentary (it's a lot).
Next time you're at a café and someone asks this question, just take a sip of your latte, look them dead in the eye, and say, "She's 97, and she's never been more alive. Because she's a legend. And legends don't need anniversaries." Then politely excuse yourself to Google "Attenborough pet monocle," which is also not a thing.