Tweedledum and Tweedledee the most celebrated and most frequently quoted (and sometimes misquoted) epigrams", satirising the disagreements between George Frideric Handel and Giovanni Bononcini, written by John Byrom (1692–1763): Although Byrom is clearly the author of the epigram, the last two lines have also been attributed to Jonathan Swift and Alexander Pope. While the familiar form of the rhyme was not printed until around 1805, when it appeared in "Original Ditties for the Nursery", it is possible that Byrom was drawing on an existing rhyme. The characters are perhaps best known from Lewis Carroll's "Through the Looking-Glass and what Alice Found There" (1871).
Tweedledum and Tweedledee Carroll, having introduced two fat little men named Tweedledum and Tweedledee, quotes the nursery rhyme, which the two brothers then go on to enact. They agree to have a battle, but never have one. When they see a monstrous black crow swooping down, they take to their heels. The Tweedle brothers never contradict each other, even when one of them, according to the rhyme, "agrees to have a battle". Rather, they complement each other's words. This fact has led Tenniel to assume that they are twins, and Gardner goes so far as to claim that Carroll intended them to be