Likely a combination of Shea and Hayley
Shaley is a modern American invention, most likely created by blending the Irish name Shea, meaning 'stately' or 'admirable,' with the English name Hayley, meaning 'hay meadow.' It follows the 20th-century trend of creating melodic, two-syllable names ending in the 'lee' sound. Because it is a modern coinage, it lacks a singular ancient root but carries the combined charm of its components.
Less common today
Shaley isn't in the latest US Top 1000. It last peaked at #2,930 in 1994.
US births per 5-year period, 1990–present (SSA data).
