Probably a modern place-style blend of Emery and -ley, suggesting a meadow or clearing.
Emerley is a name that seems to orbit the deep, saturated green of the emerald — the gem whose name comes to English through Old French *esmeralde* and ultimately from the Greek *smaragdos*, a word likely borrowed from Sanskrit or another Eastern language meaning "green gem." Emeralds have been mined in Egypt since at least 1500 BCE; Cleopatra was famously obsessed with them, and they appear throughout Roman, Aztec, and Mughal art as symbols of fertility, spring, and eternal life. The green of an emerald has never simply been a color — it has always been a statement about nature's abundance and the eye's delight.
The *-ley* or *-leigh* suffix places Emerley in a long tradition of English place-name-derived surnames repurposed as given names — names like Ashley, Kinsley, Hadley, Berkley, and Finley. This suffix (from Old English *leah*, meaning "woodland clearing" or "meadow") grounds the name in the English pastoral tradition, lending Emerley an unexpected rootedness, as if the emerald's exotic history were suddenly set down in a green English field. The combination creates something both mineral and botanical, glittering and grounded.
As a given name, Emerley is modern and rare. It benefits from the cultural visibility of both Ember (with its warm fire associations) and Emery (the Old German name meaning "brave power"), without being either, and it carries the green visual resonance of Emerald without the weight of a full gemstone name. It is precise in the way that rare names sometimes are — a name that names only one thing and names it exactly right.