From a Scottish/English surname meaning 'fort of Luguvalium,' a place name in Cumbria.
Carlyle is a surname-turned-given-name of British topographical origin. It is a variant of Carlisle, the city in Cumbria in the far northwest of England, whose name derives from the Brittonic Caer Luguvalos — "the fort of Luguvalos" — later softened by Norman-French tongues into Carleol and eventually Carlisle. The city sits on Hadrian's Wall and was a strategic Roman and medieval stronghold; its very name is a document of layered conquest and settlement.
The name Carlyle is inseparable from Thomas Carlyle (1795–1881), the towering Scottish essayist, historian, and social critic who shaped Victorian intellectual life. Born in Ecclefechan, Dumfriesshire, Carlyle wrote The French Revolution, Sartor Resartus, and On Heroes and Hero-Worship — works of muscular, idiosyncratic prose that influenced everyone from John Stuart Mill to Ralph Waldo Emerson (who became his close friend). His "Great Man Theory" of history, his thunderous moral seriousness, and his gift for coining memorable phrases made him one of the defining voices of the nineteenth century.
After his death, his surname migrated into given-name use as an homage — a Victorian and Edwardian habit of honoring admired figures by baptizing children with their surnames. As a given name, Carlyle has always been rare enough to feel distinctive. It projects a certain intellectual gravitas without being ostentatious, and its -yle ending gives it a slightly softer landing than the harder Carlisle. In contemporary usage it appeals to parents who want a surname-style given name with genuine historical depth rather than invented coinage.