A newspaper looked at a voting map shaped like a monster, mashed the governor's name into the word salamander, and a political insult was born that we still use two centuries later.
In February 1812, Massachusetts Governor Elbridge Gerry signed a redistricting bill that twisted his state's senate districts to favor his own party. One district in Essex County was so contorted it looked like a creature.
On March 26, 1812, the Boston Gazette ran a cartoon of that district drawn as a winged, clawed monster, and called it the Gerry-mander, fusing the governor's surname with salamander. Federalist papers across New England reprinted it, and the word stuck for good.
There is a small irony buried in the pronunciation. Gerry said his name with a hard G, like Gary. We now say the word with a soft G, like Jerry. The man got linguistic immortality and we do not even say his name right.
A larger irony: Gerry himself reportedly found the redistricting plan highly disagreeable, and he lost his own next election. But the map worked. His party kept control of the legislature even as he went down. The tactic outlived the man it was named for.