From an Old English/Germanic place name meaning 'horse spring' or 'mighty horse'.
Roswell began as an English topographic surname, derived from Old English elements meaning roughly 'horse spring' — 'hros' (horse) combined with 'wella' (spring or stream) — suggesting an origin near a watering place known for horses. Like many English place-name surnames, it made the transition to given name during the nineteenth century, particularly in America, where surname-as-forename was a fashionable way to honor a maternal family line or distinguished ancestor.
Roswell was the name of several notable Americans in this era, including Roswell Flower, Governor of New York in the 1890s. The name's cultural life took a dramatic and permanent turn on the night of July 8, 1947, when the United States Army Air Force announced — then quickly retracted — the recovery of a 'flying disc' near Roswell, New Mexico. Whatever crashed in the desert that summer, the name Roswell became permanently fused in the global imagination with extraterrestrial mystery, government secrecy, and the eerie romance of the unexplained.
The town leaned into it, and the name radiated outward into science fiction, conspiracy culture, and eventually mainstream pop culture through the television series 'Roswell' (1999–2002) and its reboot. For parents who love a name with layers — frontier history, civic dignity, and a cosmic footnote — Roswell offers something genuinely unusual: a grounded English name with an otherworldly afterlife.