Also, a bunch of stuff that seems super-old actually isn't. There were still lions in the Caucusus until the 10th century... CE, not BCE. A thousand years earlier they lived in Thrace, too. There were still some wooly mammoths alive when the Great Pyramids were being built.
Similarly, living history can sometimes reach closer to the modern day than one might appreciate. There were (probably—some of the stories lack documentation) a few people born into legal chattel slavery in the US still alive while Martin Luther King, Jr. was active. The "Old West" and settler/Western Expansion days were still very much in living memory when early western radio serials and films were made, so it's entirely possible (likely, even) that a couple honest-to-god gunslingers (rare though they may have been, and as unlike their film counterparts) or victims/perpetrators of settler/native violence sat down and watched romanticized Westerns on the big screen. Shane is set in 1889 and came out in 1953. Lots of people alive during the fictionalized events of the film were still alive then. At least a few people who fought in or witnessed actual fighting in the Civil War likely watched Keaton's The General in a movie theater, or (more ominously) Griffith's The Birth of a Nation.
I really good one I heard: Harriet Tubman was born into slavery when Thomas Jefferson was alive and died when Ronald Reagan was alive. The American experiment is still young.
Apparently it was coined by Alger Hiss, but I've seen Jason Kottke use the term "The Great Span" to describe this phenomenon of a small number of generations spanning surprisingly long periods of time.
Looking at that tag on kottke.org, the top few results are a Civil War widow dying in 2020, John Tyler (president in 1841) having a living grandson, and a 2020 interview with the son of a formerly enslaved person. Wild stuff.
Just for the sake of those who might misunderstand this comment:
She wasn't a "Civil War widow" per se. She was not widowed by the death of her husband in the Civil War. She was seventeen years old in 1936, and married a ninety-three year old Civil War veteran. She was the widow of a Civil War veteran.
The history of science is mostly recent too. The atomic theory, for example, was still controversial until just a little over 100 years ago. Turing's paper on universal computation and the halting problem was published less than 100 years ago. General relativity is almost exactly 100 years old. Werner Heisenberg died less than 50 years ago. Some of his students are still alive.
Similarly, living history can sometimes reach closer to the modern day than one might appreciate. There were (probably—some of the stories lack documentation) a few people born into legal chattel slavery in the US still alive while Martin Luther King, Jr. was active. The "Old West" and settler/Western Expansion days were still very much in living memory when early western radio serials and films were made, so it's entirely possible (likely, even) that a couple honest-to-god gunslingers (rare though they may have been, and as unlike their film counterparts) or victims/perpetrators of settler/native violence sat down and watched romanticized Westerns on the big screen. Shane is set in 1889 and came out in 1953. Lots of people alive during the fictionalized events of the film were still alive then. At least a few people who fought in or witnessed actual fighting in the Civil War likely watched Keaton's The General in a movie theater, or (more ominously) Griffith's The Birth of a Nation.