Mclain—most often traced to the Scottish Gaelic Mac Gille Eathain, “son of the servant of Saint John”—carries with it the quiet echo of Highland glens, where clan banners once rippled like pages waiting to be written upon. As a given name it belongs to the modern Anglo-American habit of borrowing sturdy surnames for first-name duty, yet it keeps a certain old-world gravitas beneath its brisk, two-syllable stride (muh-KLAYN). In U.S. records since the early 1980s, Mclain has hovered on the outer edge of the Top 1000—appearing in modest spurts of five to twelve births a year—suggesting a choice that feels familiar in sound yet remains comfortably uncommon. Parents drawn to it often cite its clean, decisive consonants, a subtle nod to Scottish heritage, and the cinematic sheen left by characters like Detective John McClane, all of which lend the name a rugged composure without tipping into bluster. In short, Mclain offers a dash of tartan romance and contemporary polish for those who prefer their son’s name to stand slightly apart, like a lone pine on a windswept ridge.