U.S. name for a variety of pear, 1835, named for Enoch Bartlett, who first distributed them in the U.S. The quotation collection is named for U.S. bookstore owner John Bartlett of Cambridge, Massachusetts, who first printed his "A Collection of Familiar Quotations" in 1855.
town in Devon, England, named for its situation at the mouth of the Dart River, which is perhaps from a Celtic word for "oak."
It was the typical name in the North and the Northern armies for a Confederate soldier during the American Civil War, and the Southern soldiers were, collectively Johnnies, generically Johnny Reb. In the Mediterranean, it was a typical name for an Englishman by c. 1800. In the Crimean War it became the typical name among the English for "a Turk" (also Johnny Turk), later it was extended to Arabs; by World War II the Arabs were using Johnny as the typical name for "a British man"). Johnny Crapaud as a derogatory generic name for a Frenchman or France is from 1818.
Johnny-come-lately "a new arrival" first attested 1839. Johnny-on-the-spot is from 1896. Johnny-jump-up as an American English name for the pansy is from 1837. Johnny-cocks, a colloquial name for the early purple orchid (Orchis mascula) is attested from 1883.