Combination of Jay and the suffix -lin
A modern American invention likely created by combining the name Jay, referring to the bird or a diminutive of James, with the popular 'lin' suffix. It follows the 20th-century trend of rhythmic, phonetic name construction. While it has no ancient roots, it is often associated with the qualities of the jaybird.
Professional baseball outfielder
Professional soccer player
US births per 5-year period, 1990–present (SSA data).