Endive has a unique story—it’s a youngster in the vegetable world, which is ironic considering that the root it’s grown from, called chicory, is one of the earliest plants cited in recorded literature. Endive, on the other hand, was a relatively recent discovery, thanks to a lucky accident. In 1830, a farmer named Jan Lammers in Brussels, Belgium, stored some chicory roots in his cellar because he was planning to dry and roast them for coffee (it was commonly used as an additive or coffee substitute). But then he left his farm for several months to serve in the Belgian War of Independence, and when he returned he discovered that his chicory roots had sprouted small, white leaves that were tender, crunchy, and delicious.
Likely merely a "local" discovery, but still.